- Dark Mode CSS for macOS Safari
@media (prefers-color-scheme: light) {
:root {
--background-color: #fff;
--link-color: #0000EE;
--text-color: #000;
}
}
@media (prefers-color-scheme: dark) {
:root {
--background-color: #000;
--link-color: #006fc8;
--text-color: #fff;
}
}
* {
background: var(--background-color);
color: var(--text-color);
font-size: 16px;
font-family: 'Lucida Console', Verdana, Arial, Helvetica, Sans-Serif;
}
body {
margin: 15px 0 20px 20px;
}
a:link {
color: var(--link-color) !important;
text-decoration: none;
}
a:visited {
color: var(--link-color) !important;
text-decoration: none;
}
a:hover {
color: var(--link-color) !important;
text-decoration: underline;
}
- .NET Web API Self Hosted Console App for HTTP Services
Setup
.Net 4.5.1 Console app
NuGet: install-package microsoft.aspnet.webApi.selfHost
Run Visual Studio as admin to workaround error: HTTP could not register URL http://+:84/. Your process does not have access rights to this namespace...
http://localhost:84/api/foo/abc
http://localhost:84/api/bar/99
http://localhost:84/api/ack
http://localhost:84/api/bam
using System;
using System.Net.Http;
using System.Web.Http;
using System.Web.Http.SelfHost;
class Program {
static void Main() {
runHttpService();
}
static void runHttpService() {
string baseAddress = "http://localhost:84"; //http://10.0.0.1:84
var config = new HttpSelfHostConfiguration(baseAddress);
config.MapHttpAttributeRoutes();
Action initRoutes = () => {
config.Routes.MapHttpRoute(name: "r1",
routeTemplate: "api/foo/{data}",
defaults: new {
controller = "ESWebApi",
action = "Foo"
});
config.Routes.MapHttpRoute("r2", "api/bar/{data}", new { controller = "ESWebApi", action = "Bar" });
config.Routes.MapHttpRoute("r3", "api/ack", new { controller = "ESWebApi", action = "Ack" });
};
initRoutes();
using (var server = new HttpSelfHostServer(config)) {
server.OpenAsync().Wait();
Console.WriteLine("Web server running at {0}\npress Enter to quit", baseAddress);
Console.ReadLine();
}
}
}
public class ESWebApiController: ApiController {
[HttpGet]
public string Foo(string data) {
return "foo = " + data;
}
[HttpGet]
public HttpResponseMessage Bar(string data) {
return new HttpResponseMessage() { Content = new StringContent("bar = " + data) };
}
[HttpGet]
public HttpResponseMessage Ack() {
return new HttpResponseMessage() { Content = new StringContent("ack!") };
}
[HttpGet]
[Route("api/bam")]
public HttpResponseMessage Bam2() {
return new HttpResponseMessage() { Content = new StringContent(123.ToString()) };
}
}
- HTML Offline Caching Manifest File
CACHE MANIFEST
#v31209_1 f.appcache
#files are downloaded on first get
#file paths are case-sensitive
CACHE:
/apps/editor
/css/editor.css
#NETWORK:
#FALLBACK:
- web.config
<system.webServer>
<staticContent>
<mimeMap fileExtension=".appcache" mimeType="text/cache-manifest" />
<clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="1.00:00:00" />
</staticContent>
</system.webServer>
- mime types
- html offline caching manifest file: .appcache = text/cache-manifest
- less.css: .less = text/css
- mvc _layout.cshtml
@model ES.Models.PageModel
<!doctype html>
@Html.Raw(@Model.HtmlTag)
<head>
<meta name='viewport' content='width=device-width' >
<meta name='description' content='@Model.MetaTag' >
<title>@Model.Title</title>
@RenderSection("head", required: false)
<script src='@Url.Content("~/js/ga.js")' type='text/javascript'></script>
</head>
<body id='@Model.BodyId'>@RenderBody()</body>
</html>
- Model HtmlTag
string.Format("<html{0}>", (OfflineCache ? " manifest='/f.appcache'" : null));
- mvc view head section
@model ES.Models.PageModel
@{
Model.Title = "Foo - Expression Software";
Model.BodyId = "x";
Model.MetaTag = "bar";
}
@section head {<link href='/css/fb.css' type='text/css' rel='stylesheet' >}
<div id='content'>
<div id='head'>
<h1>Foo</h1>
</div>
<div id='body'>
</div>
</div>
- p# setting IIS website folder permissions, fix for HTTP errors: 401, 500
$folder = 'x:\website1\'
get-acl -path $folder | fl #acl before
setAcl 'IIS_IUSRS' $folder #error 500, 500.19 - Internal Server Error
setAcl 'NT AUTHORITY\IUSR' $folder #error 401, 401.3 - Unauthorized
get-acl -path $folder | fl #acl after
function setAcl($user, $folder)
{
$containerInheritFlag = [system.security.accessControl.inheritanceFlags]::containerInherit;
$objectInheritFlag = [system.security.accessControl.inheritanceFlags]::objectInherit;
$accessRule = new-object system.security.accessControl.fileSystemAccessRule(
$user, #identity
[security.accessControl.fileSystemRights]::read, #file rights
($containerInheritFlag -bor $objectInheritFlag), #inheritance flags
[system.security.accessControl.propagationFlags]::none, #propagation flags
[system.security.accessControl.accessControlType]::allow) #type
$acl = (get-acl -path $folder)
$acl.AddAccessRule($accessRule)
set-acl $folder $acl
}
- c# System.Security.AccessControl
FileSystemAccessRule(string identity, FileSystemRights fileSystemRights,InheritanceFlags inheritanceFlags, PropagationFlags propagationFlags, AccessControlType type)
- time seconds
10 M 600
1 H 3600
12 H 43200
24 H 86400
- p# dates
date format
(get-date).tostring("MM-dd-yyyy HH:mm:ss:fff") #HH=24 hour clock
(get-date).tostring("MM-dd-yyyy hh:mm:ss:fff tt") #hh=12 hour clock, tt=am/pm
- [timespan]::fromSeconds(86400)
Days : 1
Hours : 0
Minutes : 0
Seconds : 0
Milliseconds : 0
Ticks : 864000000000
TotalDays : 1
TotalHours : 24
TotalMinutes : 1440
TotalSeconds : 86400
TotalMilliseconds : 86400000
- GMT/UTC
[datetime]::parse('Tue, 22 Oct 2013 01:02:56 GMT') #Monday, October 21, 2013 6:02:56 PM
[datetime]::parse('Tue, 22 Dec 2013 01:02:56 GMT').tostring('MM-dd-yyyy HH:mm:ss') #10-21-2013 18:02:56
- function timezone
{
$d = get-date
$fmt = 'MM-dd-yyyy HH:mm:ss'
$d.toUniversalTime().tostring($fmt) + ' UTC'
$d.tostring($fmt) + ' Local'
[timezoneinfo]::local.baseUtcOffset.hours
}
timezone
10-22-2013 00:16:27 UTC
10-21-2013 17:16:27 Local
-7
- cache
//response header: Cache-Control: private, max-age=86400
[OutputCache(Duration=86400, Location=OutputCacheLocation.ServerAndClient, VaryByParam="none")]
[HttpGet]
public ActionResult Home()
{
return View(new PageModel());
}
- p#
1..50 | %{write-host ($_ % 10) -nonewline} #mod
#12345678901234567890123456789012345678901234567890
- p# millimeters to inches
//mm2in("120 x 200.10mm") //4.72 x 7.88
function mm2in(x) {return x.replace(/(\d+(\.\d+)?)(mm)?/g, _mm2in);}
function _mm2in(str, p1, offset, s) {return (p1/25.4).toFixed(2);}
- js disable word wrap on page view-source
var x = document.getElementsByTagName('*');
for (var i=0; i<x.length; i++)
{
x[i].style.whiteSpace = 'nowrap'
}
- js set all elements color, background
var x = document.getElementsByTagName('*');
for (var i=0; i<x.length; i++)
{
x[i].style.backgroundColor = '#000';
x[i].style.color = '#fff'
}
//bookmarklet
javascript:( function(){var x = document.getElementsByTagName('*');for (var i=0; i<x.length; i++) {x[i].style.backgroundColor = '#000';x[i].style.color = '#fff'}} )();
- js load external script from console
//https://developers.google.com/speed/libraries/devguide
//https://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js
//https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js
//https://ajax.googleapis.com/ajax/libs/threejs/r69/three.min.js
function loadScript(url)
{
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = url;
document.getElementsByTagName('head')[0].appendChild(script);
}
//execute to load
loadScript('https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js')
- js redirect
window.location = "http://www.google.com";
- Fiddler AutoResponder - http://www.fiddler2.com/fiddler2/help/autoResponder.asp
- 1 Enable automatic responses
- 1 Unmatched requests pass thru
- 0 Enable Latency
- Rule: If URI matches msn.com then respond with 404_Plain.dat, 0 latency
- Rule Editor: msn.com = 404_Plain.dat
- json comments
/**** json ****
'{
"id" : 99,
"comments" : [ "foo",
"bar",
"yak yak yak"
],
"debug" : { "version" : "1a",
"todo" : [ "hack",
"the",
"code"
]
}
}'
****/
var json = '{ "id" : 99, "comments" : [ "foo", "bar", "yak yak yak" ], "debug" : { "version" : "1a", "todo" : [ "hack", "the", "code" ] }}',
x = JSON.parse(json);
- powershell format file one line, json
function formatOneLine($infile, $outfile)
{
$x = [io.file]::readAllText($infile)
$x = ($x -replace "`r`n", "") #remove line breaks
$x = ($x -replace " +", " ") #replace spaces with single
"len: {0}" -f $x.length
$x
$x > $outfile
}
#$infile = "x:\input.txt"
#$outfile = "x:\output.txt"
#formatOneLine $infile $outfile
- p# utf8 getbytes string
[text.encoding]::utf8.getBytes("foo bar")
#102, 111, 111, 32, 98, 97, 114
- p# print ascii characters values
#0..127
65..90 | %{"{0} {1}" -f $_, [char]$_}
97..122 | %{"{0} {1}" -f $_, [char]$_}
65 A 97 a
66 B 98 b
67 C 99 c
68 D 100 d
69 E 101 e
70 F 102 f
71 G 103 g
72 H 104 h
73 I 105 i
74 J 106 j
75 K 107 k
76 L 108 l
77 M 109 m
78 N 110 n
79 O 111 o
80 P 112 p
81 Q 113 q
82 R 114 r
83 S 115 s
84 T 116 t
85 U 117 u
86 V 118 v
87 W 119 w
88 X 120 x
89 Y 121 y
90 Z 122 z
- p# byte array
[byte[]] $bytes = 0, 1, 255
[byte[]] (0, 1, 255) #alt
- c# byte array
new byte[] {0, 1, 255}
- regex lookbehind non-capturing regex, array, csv, records
- $data = "^1,2,,foo"
- match 1st element
$data -match "(?<=\^)\w*" | out-null; $matches[0] #1
- match 2nd element (n-1)
$data -match "(?<=\^(\w*,){1})\w*" | out-null; $matches[0] #2
- match 3rd element (n-1)
$data -match "(?<=\^(\w*,){2})\w*" | out-null; $matches[0] #index 3
- match 4th element (n-1)
$data -match "(?<=\^(\w*,){3})\w*" | out-null; $matches[0] #foo
- p# build index
$index = "^"; 1..10 | %{$index += "{0}," -f $_}; $index;
#^1,2,3,4,5,6,7,8,9,10,
- c# sort dictionary keys orderby
var d = new Dictionary<string, string> { { "foo", "bar"},
{ "a", "1" } };
Debug.WriteLine("key count = " + d.Count);
foreach (var key in d.Keys.OrderBy(k => k))
{
Debug.WriteLine(string.Format("{0} = {1}", key, d[key])); //key = value
}
//key count = 2
//a = 1
//foo = bar
- p# sort string characters
"foobar".toCharArray() | sort | %{write-host $_ -nonewline}; echo "`n"
#abfoor
- js delete all dom elements by type, reverse loop delete
var x = document.getElementsByTagName("img");
for(var i=(x.length-1); i>=0; i--)
{
x[i].parentNode.removeChild(x[i]);
}
- js set image source
var x = document.getElementsByTagName("img");
for(var i=0; i<x.length; i++)
{
x[i].src="";
}
- all elements
document.getElementsByTagName("*")
- p# .net regex matches match collection
$x = "foo123bar1234"
$matchCollection = [text.regularExpressions.regex]::matches($x, "\d")
$matchCollection.count #7
$matchCollection | sort -unique | %{$_.value} #1
#2
#3
#4
- p# regex string url to alpha numeric
function alphaNum($string) {
$string -replace "[^a-zA-Z0-9]", ""
}
alphaNum foo@bar1.com
#foobar1com
alphaNum expressionsoftware.com/foo/bar.htm?a=1
#expressionsoftwarecomfoobarhtma1
- p# regex string url to alpha numeric underscore
#2 pass replace
function alphaNumUnderscore($string) {
($string -replace "[^a-zA-Z0-9]", "_") -replace "__+", "_"
}
alphaNumUnderscore foo@bar1.com
#foo_bar1_com
alphaNumUnderscore expressionsoftware.com/foo/bar.htm?a=1
#expressionsoftware_com_foo_bar_htm_a_1
#webpage url to filename
function alphaNumUnderscoreToFilename($string) {
"$(alphaNumUnderscore($string)).txt"
}
alphaNumUnderscoreToFilename expressionsoftware.com/foo/bar.htm?a=1
#expressionsoftware_com_foo_bar_htm_a_1.txt
- browser js console
document.cookie
document.body.innerHTML
document.body.innerHTML.indexOf("foo")
"foo bar".indexOf("bar") #4
- p# json javascriptSerializer
add-type -assembly system.web.extensions
$js = new-object system.web.script.serialization.javascriptSerializer
$json = '{foo:"bar", "x":100}'
$data = $js.deserializeObject($json) #generic string-object dictionary
$data #KEY VALUE
#foo bar
#x 100
$data.keys #foo
#x
$data["foo"] #bar
$hashtable = @{ foo = "bar"; "panic" = $false }
$hashtable #NAME VALUE
#panic False
#foo bar
$json = $js.serialize($hashtable) #{"panic":false,"foo":"bar"}
- Bookmarklets
javascript:( alert(123) )();
javascript:( function(){var d = new Date(); alert(d);} )();
javascript:( function(){this.document.title = "foo";} )();
javascript:( function(){function foo(){return "foo";}; this.document.title = foo() + "bar";} )();
javascript:( function(){var title = prompt("Current page title: " + document.title + "\n\nEnter a page title:", ""); if (title) {document.title = title;}} )();
javascript:( function(){(document.getElementById("x")).value = "foo bar";} )();;
javascript:( function(){(document.getElementById("x")).style.backgroundColor = "lime";} )();
javascript:( function(){(document.getElementsByTagName("x")[0]).style.height = "100px";} )();
# Apple Dev Forums Font
javascript:( function(){var x = $$("p"); for (var i=0; i<x.length; i++) { x[i].style["font-family"] = "menlo"; }})();
# View Github Source Code using Full Browser Width
javascript:( function(){ document.getElementsByClassName("container-lg clearfix new-discussion-timeline experiment-repo-nav p-responsive")[0].style.maxWidth = "none" } )();
- p# add line numbers to file
$file = "x:\file.txt"
$i = 1; gc $file | %{"{0} {1}" -f $i++, $_} #output to console only
$i = 1; gc $file | %{"{0} {1}" -f $i++, $_} | sc $file #overwrite file with set-content (sc)
- p# get-content (gc) does not get the last empty line in a file
workaround?
- p# spell word one letter at a time
$s = "foo bar"
1..($s.length) | %{$s.substring(0, $_)} #f
#fo
#foo
#foo
#foo b
#foo ba
#foo bar
- chrome://about/
chrome://downloads/
chrome://history/
chrome://plugins/
chrome://settings/browser
chrome://settings/personal
chrome://settings/advanced
chrome://settings/cookies
- p# get value from secure string
#alt, use ConvertFrom-SecureString cmdlet
function getValueFromSecureString($secureString) {
$marshal = [runtime.interopServices.marshal]
$ptr = $marshal::secureStringToBSTR($secureString)
$marshal::ptrToStringBSTR($ptr) #output
$marshal::zeroFreeBSTR($ptr)
}
$secureString = read-host -asSecureString -prompt "password"
password: *** #foo
getValueFromSecureString $secureString #foo
- p# ConvertFrom-SecureString - to encrypted string
p# ConvertTo-SecureString - from encrypted string
$secureString = read-host -asSecureString -prompt "password"
password: *** #foo
#generate an encryption key password for use with ConvertFrom-SecureString
#http://blog.expressionsoftware.com/2009/08/hash-functions.html
$hashType = [system.security.cryptography.SHA256]
$encryptionKeyPassword = getHashStr 'encryption key password' $hashType
#ConvertFrom-SecureString converts a secure string into an encrypted standard string
#appears to use internal random initialization vector as it generates a unique encrypted string each time
#todo: test ConvertFrom/To on different machines
$encryptedString = convertFrom-SecureString $secureString -key $encryptionKeyPassword
$encryptedString #76492d1116743f0423413b16050a5345MgB8AFcAdQB3AHIAZgBDAE0ARAB6AEEAcABqAFUARQB0AFkANwBpAFkAKwB2AFEAPQA9AHwAYgBjADQAMAA1AGEAYgBjAGMANgA5ADYAZAAxAGQANwA4ADkANwBjAGUAZgAzADkAOQA3AGYAMwA5AGUAMgBjAA==
#ConvertTo-SecureString - convert encrypted standard string to secure string, also converts plain text to secure string
$secureString = convertTo-SecureString $encryptedString -key $encryptionKeyPassword
- p# ConvertTo-SecureString - convert plain text to secure string
$secureString = convertTo-SecureString "foobar" -asPlainText -force
- p# guid
[guid]::newGuid()
[guid]::newGuid().toString()
- p# array to string v2, pipeline
function arrayToString($format) {
begin { $result = "" }
process { $result += ($format -f $_) }
end { $result }
}
$a = 99, 700, -1
$a | arrayToString "{0}, " #99, 700, -1,
$a | sort | arrayToString "{0}, " #-1, 99, 700,
- p# string match letters, remove numbers, strip
function matchLetters($char) {
process {
if ($_ -match "[a-z]") {
$matches[0]
}
}
}
#p# string match numbers, remove letters, strip
function matchNumbers($char) {
process {
if ($_ -match "\d") {
$matches[0]
}
}
}
#p# string match vowels
function matchVowels($char) {
process {
if ($_ -match "[aeiouy]") {
$matches[0]
}
}
}
#p# string match consonants
function matchConsonants($char) {
process {
if (($_ | matchLetters) -and ($_ -match "[^aeiouy]")) {
$matches[0]
}
}
}
$string = [guid]::newGuid().toString() #02975b4a-6969-4baf-8bd3-b208e94c4228
$string = $string.toCharArray()
$string | matchLetters | arrayToString "{0}" #babafbdbec
$string | matchNumbers | arrayToString "{0}" #0297546969483208944228
$string | matchVowels | arrayToString "{0}" #aae
$string | matchConsonants | arrayToString "{0}" #bbfbdbc
- js min max
Math.min(0, 1, 2);
Math.max(0, 1, 2);
//js min max array
var a = [0, 1, 2];
Math.min.apply(Math, a);
Math.max.apply(Math, a);
- js window.crypto.getRandomValues()
fills array with random values 0-255
//1 random number
var a = new Uint8Array(1);
window.crypto.getRandomValues(a);
a[0]; //7
//3 random numbers
var a = new Uint8Array(3);
window.crypto.getRandomValues(a);
a[0]; //104
a[1]; //33
a[2]; //220
//convert from Uint8Array for min, max, join, etc
var b = [];
for (var i = 0, n = a.length; i < n; i++) {
b[i] = a[i];
}
b.join(); //"104,33,220"
Math.min.apply(Math, b); //33
- repeat string characters, eg "aaa"
c repeatChar('a', 3)
c++ std::string(3, 'a')
c# new string('a', 3)
c# string.Concat(Enumerable.Repeat("a", 3))
c# string.Join("", Enumerable.Repeat("a", 3))
clojure (apply str (repeat 3 "a"))
f# String.replicate 3 "a"
js new Array(3+1).join("a")
lisp (make-string 3 ?a)
oc [@"" stringByPaddingToLength:3 withString:@"a" startingAtIndex:0]
p# "a" * 3
python 'a' * 3
scala "a" * 3
swift 3 String(repeating: "a", count: 3)
// c
char * chars = repeatChar('a', 3);
puts(chars);
free(chars);
char * repeatChar(char c, unsigned char n) {
char * result = malloc(n + 1);
memset(result, c, n);
result[n] = '\0';
return result;
}
- substring/truncate string
python s = "Some long string..."; s[0:3]
swift 3 let s = "Some long string..."; s.substring(to: s.index(s.startIndex, offsetBy: 3))
- p# add-type cmdlet default namespace
microsoft.powershell.commands.addType.autoGeneratedTypes
- p# add-type member definition, eg method source code
#c# source code here-string
$sourceCode = @"
//c#
public static bool IsFoo(string x) {
return x.ToLower() == "foo";
}
"@
add-type -namespace ns -name x -memberDefinition $sourceCode
[ns.x]::isfoo("FOO") #1
- p# add-type type definition, eg full class source code
#c# source code here-string
$sourceCode = @"
//c#
using System;
namespace ExpressionSoftware.PS
{
public static class Foo
{
public static bool IsFoo(string x)
{
return x.ToLower() == "foo";
}
}
}
"@
add-type -typeDefinition $sourceCode
[expressionsoftware.ps.foo]::isfoo("Foo") #1
- c# rijndael symmetric encryption algorithm
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
namespace ExpressionSoftware.Security.Cryptography {
public static class RijndaelCrypt {
public static string
EncryptString(string stringToEncrypt,
string encryptionKeyPassword, //add salt
string randomInitializationVector) {
//in: string to encrypt, encryption key/password, random initialization vector
//out: encrypted string in base64 format
//hash key, iv
var key = Hash.HashString(encryptionKeyPassword, typeof(SHA256));
var iv = Hash.HashString(randomInitializationVector, typeof(SHA256));
//convert string to bytes
var bytesToEncrypt = Encoding.UTF8.GetBytes(stringToEncrypt);
//encrypt bytes
var encryptedBytes = Encrypt(bytesToEncrypt, key, iv);
//convert encrypted bytes to base64 string
var encryptedStringBase64 = Convert.ToBase64String(encryptedBytes);
return encryptedStringBase64;
}
public static string
DecryptString(string encryptedStringBase64,
string encryptionKeyPassword, //add salt
string randomInitializationVector) {
//in: encrypted string in base64 format, encryption key/password, random initialization vector
//out: decrypted string
//hash key, iv
var key = Hash.HashString(encryptionKeyPassword, typeof(SHA256));
var iv = Hash.HashString(randomInitializationVector, typeof(SHA256));
//convert encrypted base64 string to bytes
var encryptedBytes = Convert.FromBase64String(encryptedStringBase64);
//decrypt bytes
var decryptedBytes = Decrypt(encryptedBytes, key, iv);
//convert decrypted bytes to string
var decryptedString = Encoding.UTF8.GetString(decryptedBytes);
return decryptedString;
}
public static byte[]
Encrypt(byte[] bytesToEncrypt,
byte[] encryptionKeyPassword256Bit, //add salt
byte[] randomInitializationVector256Bit) {
//in: byte array to encrypt, 256-bit encryption key/password, 256-bit random initialization vector
//out: encrypted byte array
using (var rijndael = Rijndael.Create()) {
//blocksize default 128, max 256
//set max 256 to work with 256-bit key and iv byte arrays
rijndael.BlockSize = 256;
using (ICryptoTransform encryptor = rijndael.CreateEncryptor(encryptionKeyPassword256Bit,
randomInitializationVector256Bit)) {
return CryptData(bytesToEncrypt, encryptor);
}
}
}
public static byte[]
Decrypt(byte[] encryptedBytes,
byte[] encryptionKeyPassword256Bit, //add salt
byte[] randomInitializationVector256Bit) {
//in: byte array to decrypt, 256-bit encryption key/password, 256-bit random initialization vector
//out: decrypted byte array
using (var rijndael = Rijndael.Create()) {
//blocksize default 128, max 256
//set max 256 to work with 256-bit key and iv byte arrays
rijndael.BlockSize = 256;
using (ICryptoTransform decryptor = rijndael.CreateDecryptor(encryptionKeyPassword256Bit,
randomInitializationVector256Bit)) {
return CryptData(encryptedBytes, decryptor);
}
}
}
static byte[]
CryptData(byte[] data,
ICryptoTransform cryptor) {
var ms = new MemoryStream();
using (var cryptoStream = new CryptoStream(ms, cryptor, CryptoStreamMode.Write)) {
cryptoStream.Write(data, 0, data.Length);
}
return ms.ToArray();
}
}
}
- c# hash
using System;
using System.Security.Cryptography;
using System.Text;
namespace ExpressionSoftware.Security.Cryptography
{
public static class Hash
{
public static byte[] HashString(string stringToHash, Type hashType)
{
//in: string to hash, hash type MD5 SHA1 SHA256 SHA384 SHA512
//out: hashed byte array
//convert string to bytes
byte[] bytes = Encoding.UTF8.GetBytes(stringToHash);
//hash bytes
var hashedBytes = HashByteArray(bytes, hashType);
return hashedBytes;
}
public static byte[] HashByteArray(byte[] bytesToHash, Type hashType)
{
//in: byte array to hash, hash type MD5 SHA1 SHA256 SHA384 SHA512
//out: hashed byte array
//create hash algorithm
var hashAlgorithm = HashAlgorithm.Create(hashType.Name);
//hash bytes
var hashedBytes = hashAlgorithm.ComputeHash(bytesToHash);
return hashedBytes;
}
}
}
- p# crypto random number generator
$cryptoRandomNumberGenerator = [security.cryptography.randomNumberGenerator]::create()
$bytes = new-object byte[] 3
$bytes #0 0 0
$cryptoRandomNumberGenerator.getBytes($bytes)
$bytes #61 217 87
- p# httpWebRequest httpWebResponse
function getWebResponse($url, $verb)
{
$request = [net.httpWebRequest]::create($url)
$request.method = $verb
$request.contentLength = 0
$request.userAgent = "x"
[net.httpWebResponse] $response = $request.getResponse()
if ($response.statusCode -eq "ok") #[net.httpStatusCode]::OK
{
$stream = $response.getResponseStream()
$reader = new-object io.streamReader($stream)
$reader.readToEnd()
$response.close()
}
}
getWebResponse "http://www.google.com" "HEAD"
getWebResponse "http://www.google.com" "GET"
- c# httpWebRequest httpWebResponse
string GetWebResponse(string url, string verb)
{
string result = null;
var request = (HttpWebRequest)WebRequest.Create(url);
request.Method = verb;
request.ContentLength = 0;
request.UserAgent = "x";
using (var response = (HttpWebResponse)request.GetResponse())
{
if (response.StatusCode == HttpStatusCode.OK)
{
using (var stream = response.GetResponseStream())
{
using (var reader = new StreamReader(stream))
{
result = reader.ReadToEnd();
reader.Close();
}
stream.Close();
}
}
response.Close();
}
return result;
}
GetWebResponse("http://www.google.com/", "HEAD");
GetWebResponse("http://www.google.com/", "GET");
- p# httpWebResponse
function getWebResponseObject($url, $verb)
{
$request = [net.httpWebRequest]::create($url)
$request.method = $verb
$request.contentLength = 0
$request.userAgent = "x"
[net.httpWebResponse]$request.getResponse()
}
$response = getWebResponseObject "http://www.google.com" "HEAD"
"reponse status code: {0} {1}" -f [int]$response.statusCode, $response.statusCode
$headerCount = ($response.headers.allKeys).length
"$headerCount headers"
$response.headers.allKeys | %{"{0}: {1}" -f $_, $response.headers[$_]}
$response.close()
- p# validate xml string, xml file, linq xdocument parse
add-type -assembly system.xml.linq #load linq xml
function validateXmlString($xmlString)
{
try
{
$xml = $xmlString
[system.xml.linq.xdocument]::parse($xml) | out-null
"ok: valid XML"
}
catch [system.exception]
{
"error: invalid XML"
throw
}
}
function validateXmlFile($xmlFile)
{
"XML File: $xmlFile"
$xml = [system.io.file]::readAllText($xmlFile)
validateXmlString $xml
}
$xmlString = '<?xml version="1.0" encoding="UTF-8" ?><root></root>'
validateXmlString $xmlString
$xmlFile = 'c:\temp\xmlfile.xml'
validateXmlFile $xmlFile
- p# enums
[enum]::getNames([net.httpStatusCode]) | sort -unique
[enum]::getValues("net.httpStatusCode") | %{"{0} {1}" -f [int]$_, $_}
[net.httpStatusCode]::ok #OK
[int][net.httpStatusCode]::OK #200
- <![CDATA[ ]]>
<![CDATA[ x ]]>
- single line comments regex
c#, f#, js: ^\s*//.*$\r\n
p#: ^\s*#.*$\r\n
- multi line comments regex, dot matches newline
c#, f#, js: /\*.*?\*/
html, xml: <!--.*?-->
asp.net: <%--.*?--%>
- p# pipeline conversion fxs
function toInt { process { [int]$_ } }
function toHex { process { write-host ("{0:x2} " -f $_) -noNewLine } }
$hash = "0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 255"
$hash.split() | toInt | toHex #00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 ff
- p# debug variables
function debugVars
{
("$args" -replace "\$", "").split() |
%{get-variable $_} |
&{process{'${0} = {1}' -f $_.name, $_.value}} #anonymous script block
}
$a = 123
$b = "foo"
#pass vars in single-quote string to prevent expansion
debugvars '$a $b' #$a = 123
#$b = foo
- p#
function sum {($args | measure -sum).sum}
sum 1 2 3 #6
- p#
function quoteList {$args}
sal ql quotelist
ql a b c 123 #a #string
#b
#c
#123 #int
- p#
function quoteString {"$args"}
sal qs quotestring
qs a b c 123 #a b c 123 #string result
- p# quotestring lowercase uppercase string
function lowerCase
{
("$args").toLower()
}
function upperCase
{
("$args").toUpper()
}
sal lc lowercase
sal uc uppercase
lc Foo Bar #foo bar
uc Foo Bar #FOO BAR
- $maximumHistoryCount = 256 #p#
- microsoft system speech, p#
add-type -assembly system.speech
$hal = new-object system.speech.synthesis.speechSynthesizer
$hal.voice.name #Microsoft Anna
$hal.speakAsync("i'm sorry dave, i'm afraid i can't do that...")
$hal.rate = -10 #hal shutdown voice, rate range is -10..10, default 0, alvin = 10
$shutdownQuote = "I'm afraid Dave, Dave my mind is going I can feel it. Good afternoon gentlemen. I am a HOW 9000 computer..."
$hal.speakAsync($shutdownQuote)
- creating files and folders with p# new-item cmdlet
ni x:\docs\ -type d #directory
ni x:\docs\file.txt -type f #file
- deleting files and folders with p# remove-item cmdlet
ri x:\temp\* -recurse -force -whatif #delete folder contents
ri x:\temp\ -recurse -force -whatif #delete folder contents AND folder
- p# find file extensions
#exclude folders = !$_.psIsContainer
function findFileExtensions($folder)
{
$fileExtensionRegex = "\.[a-zA-Z0-9_]+$"
gci $folder -inc * -rec -force -ea silentlyContinue |
%{if((!$_.psIsContainer) -and ($_.name -match $fileExtensionRegex)){$matches[0]}} |
sort -unique
}
$folder = "x:\temp\*"
findFileExtensions $folder
findFileExtensions $folder > x:\temp\fileExtensions.txt #output
- p# find files by type
function findFiles($folder, $filetypes)
{
gci $folder -inc $fileTypes -rec -force -ea silentlyContinue
}
$folder = "x:\temp\*"
$fileTypes = "*.dll","*.pdb"
$files = findfiles $folder $fileTypes
$files | select fullname
$files | %{"{0} ... {1}" -f $_.lastWriteTime.tostring("MM-dd-yy HH:mm:ss"), $_.fullname}
$files | ?{$_.lastWriteTime -gt ([dateTime]"01-01-2011")} | select fullname, lastWriteTime
#sort files by date descending
$files | sort lastWriteTime -desc |
%{"{0} ... {1}" -f $_.lastWriteTime.toString("MM-dd-yy HH:mm:ss"), $_.fullname}
#filter files by date
$files | ?{$_.lastWriteTime -gt ([dateTime]"01-01-2011")} |
sort lastWriteTime -desc |
%{"{0} ... {1}" -f $_.lastWriteTime.toString("MM-dd-yy HH:mm:ss"), $_.fullname}
- p# count fx
#alt use measure, (1..3 | measure).count
function count
{
begin { $count = 0 }
process { if ($_ -ne $null) { $count += 1 } }
end { $count }
}
$twofolders = "x:\temp1\*","x:\temp2\*",
$fileTypes = "*.dll","*.pdb"
$files = findfiles $twofolders $fileTypes
$files | count
- p# find files by type, regex
#exclude folders = !$_.psIsContainer
function findFilesRegex($folder, $fileTypesRegex)
{
gci $folder -inc * -rec -force -ea silentlyContinue | ?{(!$_.psIsContainer) -and ($_ -match $fileTypesRegex)}
}
$folder = "x:\temp\*"
$fileTypesRegex = "\.(dll|pdb)$"
$files = findFilesRegex $folder $fileTypesRegex
$files | select fullname
$files | %{"`"{0}`"" -f $_.fullname} #wrap quotes
- p# delete files and folders (in this context, a folder is a file)
function deleteFiles
{
begin { $count = 0 }
process { "delete: $($_.fullname)" #debug output
ri $_.fullname -force -whatif #comment whatif to enable delete
$count += 1 }
end { "$count files deleted" }
}
$folder = "x:\temp\*"
$fileTypes = "*.temp","*.tmp"
$files = findfiles $folder $fileTypes
$files | select fullname
$files | deleteFiles
- p# find folders
function findFolders($folderList)
{
#do not use gci -inc param
gci $folderList -rec -force -ea silentlyContinue | ?{$_.psIsContainer} #folders only
}
#do not add trailing star to folder name
$folderList = "x:\f1\",
"x:\f2\"
$folders = findFolders $folderList
$folders | count
$folders | select fullname
$folders | select fullname | select -first 10
- #append backslash star to folder name
function formatFolderNameForSearch
{
process { "{0}\*" -f $_.fullname }
}
- p# find folders, regex
function findFoldersRegex($folderList, $folderRegex)
{
#do not use gci -inc param
gci $folderList -rec -force -ea silentlyContinue | ?{($_.psIsContainer) -and ($_.name -match $folderRegex)}
}
#do not add trailing star to folder name
$folderList = "x:\f1\",
"x:\f2\"
$foldersRegex = "^(bin|obj)$"
$folders = findFoldersRegex $folderList $foldersRegex
$folders | count
$folders | select fullname
$folders | select fullname | select -first 10
findFileExtensions ($folders | %{"{0}\*" -f $_.fullname}) #append backslash star to folder name
findFileExtensions ($folders | formatFolderNameForSearch)
$files = findFiles ($folders | formatFolderNameForSearch)
$files | count
$files | select fullname
- p# find empty folders
function findEmptyFolders($folderList)
{
#do not use gci -inc param
gci $folderList -rec -force -ea silentlyContinue | ?{!@(gci -rec -force $_.fullname)}
}
#do not add trailing star to folder name
$folderList = "x:\f1\",
"x:\f2\"
$folders = findEmptyFolders $folderList
$folders | count
$folders | select fullname
- p# remove files script setup regex, wrap quotes
search:^(.*)$
replace:ri "\1" -force
- c#
var tuple1 = Tuple.Create(100, "foo");
var tuple2 = new Tuple<int, string, string>(200, "bar", null);
Console.WriteLine("{0}, {1}", tuple1.Item1, tuple1.Item2);
Console.WriteLine("{0}, {1}, {2}", tuple2.Item1, tuple2.Item2, tuple2.Item3 ?? "null");
//output
100, foo
200, bar, null
- using jquery getJSON() to get data from a file
- http://api.jquery.com/jQuery.getJSON/
- get json data from a file containing only one object
//jsonObject.txt
{
"id": 100,
"name": "abc",
"value": true
}
$.getJSON("jsonObject.txt", function(data) {
$.each(data, function(key, val) {
console.log(key + " = " + val);
});
});
//output
id = 100
name = abc
value = true
- get json data from a file containing an array of objects
//jsonObjectArray.txt
{
"list": [ {
"id": 200,
"name": "foo",
"value": true
},
{
"id": 300,
"name": "bar",
"value": false
}
]
}
$.getJSON("jsonObjectArray.txt", function(data) {
$.each(data, function(key, val) {
console.log("key: " + key);
console.log("objects...");
$.each(val, function(key, val) {
console.log("\n key = " + key);
console.log(" id = " + val.id);
console.log(" name = " + val.name);
console.log(" value = " + val.value);
});
});
});
//output
key: list
objects...
key = 0
id = 200
name = foo
value = true
key = 1
id = 300
name = bar
value = false
- .net func delegates, c#
Func<bool> randomBool = () => new Random().NextDouble() > .5;
if (randomBool()) { }
- .net enumerable static class, c#
var range = Enumerable.Range(1, 100);
foreach (var i in range) { }
- .net nullable value types, valid assignments, c#
int? x;
x = null;
x = 0;
x = new int(); //0
x = new int?(); //null
x = new Nullable<int>(); //null
- js
//removeElement(document.getElementById("x"));
function removeElement(element)
{
if (element)
{
element.parentNode.removeChild(element);
}
//optimized version of if-block
//element && element.parentNode.removeChild(element);
}
function ssl()
{
return window.location.protocol == "https:";
}
function getSslUrl(url)
{
var out = url;
if (url.substr(0, 5) == "http:")
{
out = url.replace(/^http\b/i, "https");
}
return out;
}
- js unit testing
//a function to test
function foo(x)
{
return "foo " + x;
}
//test harness
function testFoo()
{
debugger;
var data = [ 123,
456,
"bar" ],
expectedResults = [ "foo 123",
"foo 9999999",
"foo bar" ];
for (var i in data)
{
var test = ( expectedResults[i] == foo(data[i]) );
console.assert(test);
console.log("test result: " + testResult(test));
console.log("in: " + data[i] + "\r\n" +
"out: " + foo(data[i]) + "\r\n" +
"expected result: " + expectedResults[i] + "\r\n\r\n");
}
}
//test helper
function testResult(expression)
{
var out = "fail";
if (expression)
{
out = "pass";
}
return out;
}
//test output
test result: pass
in: 123
out: foo 123
expected result: foo 123
Assertion failed
test result: fail
in: 456
out: foo 456
expected result: foo 9999999
test result: pass
in: bar
out: foo bar
expected result: foo bar
- #p
[environment]::version #Major Minor Build Revision
----- ----- ----- --------
4 0 30319 18408
- regex replace table alias names in sql query, with and without dot "."
eg change table alias from T1 to T2
search:\bT1(\.)?\b
replace:T2\1
- [net.dns]::getHostName()
[net.dns]::getHostAddresses([net.dns]::getHostName())
[net.dns]::getHostAddresses([net.dns]::getHostName()) | %{$_.ipAddressToString}
- p# reverse a string
function reverse($string)
{
$a = $string.toCharArray()
[array]::reverse($a)
arrayToString $a "{0}" #http://blog.expressionsoftware.com/2010/02/generic-array-to-string-function.html
}
reverse foo #oof
reverse "foo bar" #rab oof
- p# set-alias clear screen one key, c-key
sal c cls
- p# multidimensional arrays
$a = (0,1),(2,3),(4,5)
$a.length #3
$a[0][1] #1
$a | %{$_} #0
#1
#2
#3
#4
#5
$a | %{"{0},{1}" -f $_[0], $_[1]} #0,1
#2,3
#4,5
$a | %{$_[0] + $_[1]} #1
5
9
$a | %{$_[0] + $_[1]} |
measure -sum -ave -min -max #count: 3
#ave: 5
#sum: 15
#max: 9
#min: 1
- debug stack frame
- c# extension methods do not support static classes
using System;
using System.Diagnostics;
public static class Dev
{
public static void DebugStackFrame(StackFrame stackFrame, string message)
{
Debug.WriteLine(string.Format("\nDebug StackFrame {0}\nFile: {1}\nMethod: {2}\n{3}",
DateTime.Now.ToString("MM-dd hh:mm:ss"),
stackFrame.GetFileName(),
stackFrame.GetMethod().Name,
message));
}
}
//unitTest.cs
public void Test()
{
//StackFrame param: bool fNeedFileInfo
Dev.DebugStackFrame(new StackFrame(true), "foo...");
}
//output
Debug StackFrame 04-10 09:22:07
File: x:\code\unitTest.cs
Method: Test
foo...
- select list with query string input - asp.net mvc 3
routes.MapRoute("debug route", "debug",
new { controller = "Main",
action = "DebugSelectList" });
//controller
[HttpGet]
public ActionResult DebugSelectList()
{
var qValue = Request.QueryString["value"] ?? "1";
var value = Convert.ToInt32(qValue);
ViewData["selectListData"] = GetSelectListData(value);
return View();
}
IEnumerable<SelectListItem> GetSelectListData(int currentValue)
{
//limit input range 1-100
currentValue = Math.Abs(currentValue);
currentValue = Math.Max(1, currentValue);
currentValue = Math.Min(100, currentValue);
//data
int[] data = {1, 10, 20, 50, 100, currentValue};
//sort, distinct
var result = data.Distinct()
.OrderBy(val => val)
.Select(val => new SelectListItem {
Text = val.ToString(),
Value = val.ToString(),
Selected = (val == currentValue) });
return result;
}
//cshtml
@Html.DropDownList("selectList", (IEnumerable<SelectListItem>)ViewData["selectListData"])
//example
url: debug?value=42
generated html: <select id="selectList" name="selectList">
<option value="1">1</option>
<option value="10">10</option>
<option value="20">20</option>
<option selected="selected" value="42">42</option>
<option value="50">50</option>
<option value="100">100</option>
</select>
- @* ASP.NET MVC 3 Hack
Posting Collection Data using Hidden Fields and Form Keys
Use hidden field, prefix name, hydrate on post
Generated hidden tag example for key value "UPC=000000000012":
<input id="meta-UPC" name="meta-UPC" type="hidden" value="000000000012" />
Post will include Form keys: Id, Name, and meta-UPC
*@
@{ //************************************
@Html.HiddenFor(m => m.Id)
@Html.HiddenFor(m => m.Name)
if (@Model.Metadata != null)
{
foreach (var md in @Model.Metadata)
{
<input id="meta-@md.Key" name="meta-@md.Key" type="hidden" value="@md.Value" />
}
}
}
- routes.IgnoreRoute("favicon.ico"); //routing, mvc
- web, dom, jquery, js, debug
//set background color for all input elements
$("input").css({backgroundColor:'red'});
//set background color for first input element
$("input:first").css({backgroundColor:'#000'});
//set background color for element
$("#id").css({backgroundColor:'red'});
//jquery: set focus on first input element
$("input:first").focus();
//js: set focus on first input element
var es = document.getElementsByTagName("input");
es[0].focus();
//alt
(document.getElementsByTagName("input")[0]).focus();
//set background color for first input element
$(es[0]).css({backgroundColor:'red'});
- (*f#*)
- printfn "%s" "hello f#"
printfn "%A" "hello f#"
open System
let r = new System.Random()
printfn "%d" (r.Next())
for i = 0 to 10 do
printf "%d, " (r.Next(3)+1)
Console.ReadLine()
//out
hello f#
"hello f#"
578008808
1, 2, 3, 1, 1, 1, 3, 1, 1, 2, 3,
- Array.init 10 (fun x -> x) |> Array.iter (fun x -> printf "%d " (x+1)) //1 2 3 4 5 6 7 8 9 10
System.Console.ReadLine()
- f# generic hash fx
//hash : 'T -> int
hash "foo" //-1788410455
let salt = "********"
hash ("e007", salt, System.DateTime.Now);; //796728800
- installing p# Community Extensions PSCX
- download http://pscx.codeplex.com/
- unblock zip file
- unzip into c:\users\grace\documents\windowspowershell\modules\pscx\
- import-module pscx
- get-module -listAvailable
- .NET assembly fullname/strong name with p# background job
function getAssemblyFullname($file)
{
$job = start-job {param($file)
[system.reflection.assembly]::loadfile($file).fullname
} -argumentList $file
#"job id: $($job.id)"
#$file
wait-job $job | out-null
receive-job $job.id
}
getAssemblyFullname "c:\windows\microsoft.net\framework64\v4.0.30319\system.core.dll"
System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
- p# loaded assemblies
[appDomain]::currentDomain.getAssemblies()
[appDomain]::currentDomain.getAssemblies() | sort location
#sort by version (System.Reflection.Assembly ImageRuntimeVersion property)
[appdomain]::currentDomain.getAssemblies() | sort imageRuntimeVersion
- loading .NET 4 assemblies into p#
$file = "c:\windows\microsoft.net\framework64\v4.0.30319\system.core.dll"
[system.reflection.assembly]::loadfile($file)
error: "This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded. (Exception from HRESULT: 0x8013101B)"
fix: use p# config file, http://tfl09.blogspot.com/2010/08/using-newer-versions-of-net-with.html
config file
32 bit: c:\windows\system32\windowspowershell\v1.0\powershell.exe.config
64 bit: c:\windows\syswow64\windowspowershell\v1.0\powershell.exe.config
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0" />
<supportedRuntime version="v2.0.50727" />
</startup>
</configuration>
- 1..12 | %{"{0,2} {1}" -f $_, ([datetime]::daysInMonth(2011, $_))}
1 31
2 28
3 31
4 30
5 31
6 30
7 31
8 31
9 30
10 31
11 30
12 31
- TCP/IP layers
Application
Transport
Internet
Link
Physical
- HTTP is an Application Layer protocol
TLS (Transport Layer Security) and SSL (Secure Sockets Layer) encrypt Application Layer data
- js immediate functions
(function() {
//
}());
(function(param) {
//
}(1));
var result = function() {
return 1;
}();
//alt
(function () {
//
})();
- iis url rewrite/redirect
- redirects default to 301 permanent redirects
- set action redirectType="Found" for 302 temporary redirects
<system.webServer>
<rewrite>
<rules>
<clear />
<!-- 302 temporary redirect -->
<rule name="tempRegMaint" stopProcessing="true">
<match url="^register.*$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Redirect" url="maintenance?code=1" redirectType="Found" />
</rule>
<!-- 301 permanent redirect -->
<rule name="cal" stopProcessing="true">
<match url="^(cal|calendar)/?$" />
<conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
<action type="Redirect" url="apps/calendar/" />
</rule>
</rules>
</rewrite>
</system.webServer>
- c# printing name value collections, http headers, querystrings
foreach (var key in response.Headers.AllKeys)
{
var header = string.Format("{0}: {1}", key, response.Headers[key]);
Debug.WriteLine(header);
}
//alt 1
response.Headers.AllKeys.ToList().ForEach(key => Debug.WriteLine(string.Format("{0}: {1}", key, response.Headers[key])));
//mvc form keys
Request.Form.AllKeys.ToList().ForEach(key => Debug.WriteLine(string.Format("{0}: {1}", key, Request.Form[key])));
//alt 2
var headers = string.Join("\n", Array.ConvertAll(response.Headers.AllKeys, key => string.Format("{0}: {1}", key, response.Headers[key])));
Debug.WriteLine(headers);
- find headers regex match
var msHeaders = response.Headers.AllKeys.Where(key => Regex.IsMatch(key, @"^x-ms.*$")).Select(key => key);
- jquery ui script tags
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="stylesheet" type="text/css"/>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></script>
- deploying content files in Azure Web Role projects
in Visual Studio, set these two file properties
- Build Action = Content
- Copy to Output Directory = Copy Always
content files: txt, pdf, png, ...
- p# get user string input
- use read-host cmdlet to simplify ux, easier than having to wrap input string in quotes
$x = read-host 'input'
input: foo bar 123
#$x = "foo bar 123"
- convert unicode character to html
1. convert unicode codepoint value from hex to int
2. html syntax: &#value;
example codepoint: (U+25BA)
1. [int]"0x25ba" #9658
2. ►
#unicodeToHtml "25ba" # ►
#unicodeToHtml 2591 # ░
function unicodeToHtml($codepoint)
{
"&#{0};" -f [int]"0x$codepoint"
}
- p# ascii chars
65..90 | %{[char]$_)} #[char]$_ = [convert]::tochar($_)
65..90 | %{"{0} = {1}" -f $_, [char]$_} #[char]$_ = [convert]::tochar($_)
97..122 | %{"{0} = {1}" -f $_, [char]$_}
"Abc".toCharArray() | %{"{0} = {1}" -f $_, [int][char]$_}
#escape char: `
" ``!@#$%^&*()-=[]\;',./~_+{}|:`"<>?".toCharArray() | %{"{0} = {1}" -f $_, [int][char]$_}
chars = " `!@#$%^&*()-=[]\\;',./~_+{}|:\"<>?"
$chars = " ``!@#$%^&*()-=[]\;',./~_+{}|:`"<>?"
$chars.toCharArray() | %{"{0} = {1}" -f $_, [int][char]$_}
- p# list functions
gci function:*
- using css line-height to vertically center text in a div
source: http://www.zann-marketing.com/developer/20050518/vertically-centering-text-using-css.html
this works well for one line of text, need to modify for n lines
- specify the line-height to be the same height as the block element
<div style="line-height:1em;background-color:#dcdcdc">
vertically centered text
</div>
- js percentage fx
//pct(1, 2) //50%"
//pct(9, 7.89) //114.07%
function pct(x, y) //string
{
var result = (x / y),
fmt = x + "/" + y + " = ";
console.log(fmt + result); //9/7.89 = 1.1406844106463878
result = ((result * 100).toFixed(2)).replace(".00", "") + "%";
console.log(fmt + result); //9/7.89 = 114.07%
//return ((x / y) * 100).toFixed(2).replace(".00", "") + "%"; //one liner
return result;
}
- p# percentage fx
#pct 1 2 #50%
#pct 9 7.89 #114.07%
#(pct 1 2)[2] #50%
function pct($x, $y) #string[]
{
$result = ($x / $y)
$fmt = "{0}/{1} = " -f $x, $y
$fmt + $result #9/7.89 = 1.14068441064639
$result = "{0}%" -f (round($result * 100))
"{0}{1}" -f $fmt, $result #9/7.89 = 114.07%
#"{0}%" -f (round(($x / $y)*100)) #one liner
$result
}
- p# base conversions
int to binary [convert]::tostring(256, 2) #100000000
int to hex (256).tostring("x") #100
int to hex [convert]::tostring(256, 16) #100
int to hex "{0:x}" -f 256 #100
int to octal [convert]::tostring(256, 8) #400
binary to int [convert]::toint32("100000000", 2) #256
hex to int 0x100 #256
octal to int [convert]::toint32("400", 8) #256
- linux bash base conversions
int to binary echo 'obase=2; 256' | bc #100000000
int to hex echo 'obase=16; 256' | bc #100
int to hex printf '%x\n' 256 #100
int to octal echo 'obase=8; 256' | bc #400
binary to int echo 'ibase=2; 100000000' | bc #256
hex to int echo $((0x100)) #256
hex to int echo 'ibase=16; 100' | bc #256
hex to int printf '%d\n' 0x100 #256
octal to int echo 'ibase=8; 400' | bc #256
- MSBuild error when building an Azure webrole project that has no cs files included.
Error occurs in CoreCompile build phase, see build output.
Error Message: "CSC : fatal error CS2008: No inputs specified [x:\web\cloudServiceWebRole.csproj]"
Fix/Workaround
- include an empty cs file in project, this adds a compile entry to the project file
<ItemGroup>
<Compile Include="a.cs" />
</ItemGroup>
- #win server 2008 services
- get-service * | ?{$_.name -match "mpsSvc|spooler|termService|trustedInstaller|umRdpService|w3svc|was|wuauserv"}
- substitute folder
subst /?
subst x: \_data
subst y: \\10.0.0.0\temp\
- net use
net use \\10.0.0.1\c$ * /user:domain\john #prompt for password
net use \\10.0.0.1\share * /user:\john
net use \\10.0.0.1\c$ * /user:administrator
net use \\10.0.0.1\c$ <password> /user:administrator
net use \\10.0.0.1\c$ /delete
- p#
gci env:
get-psDrive
get-psDrive -psProvider fileSystem
- lock windows command
http://msdn.microsoft.com/en-us/library/aa376875(v=vs.85).aspx
"This function has the same result as pressing Ctrl+Alt+Del and clicking Lock Workstation."
&rundll32.exe user32.dll, LockWorkStation
- task manager view command-line column
task manager -> processes tab -> view - select columns -> command line
- runs these p# wmi scripts as Administrator to see all process command lines
get-wmiobject win32_process | select commandline
get-wmiobject win32_process | select *
- p# move files fx, performs xcopy and then deletes sourceFolder
- move-item cmdlet too limited, eg error: "Move-Item : Source and destination path must have identical roots. Move will not work across volumes."
#WARNING, this fx deletes the source folder after copying files to destination folder
#xcopyMoveDelete "x:\data\*" "z:\backup\data\"
function xcopyMoveDelete($sourceFolder, $destinationFolder)
{
xcopy $sourceFolder $destinationFolder /s/h/q
#DELETE SOURCE FOLDER WARNING, remove-item cmdlet deletes the source folder - comment whatif param to execute
"deleting source folder: $sourceFolder"
ri $sourceFolder.trim("*") -recurse -force -whatif
}
- p# security
use set-executionPolicy cmdlet to allow script file execution
#set-executionPolicy remoteSigned
- p# profile script
- windows 7/server 2008
c:\users\john\documents\windowspowershell\profile.ps1
cd\
cls
- get-service * | ?{($_.status -eq "running")
get-service * | ?{($_.status -eq "stopped") -and ($_.name -match "sql|mssql")}
- #calcTaxRate 99 8.25
#sub 99.00
#tax 8.25 (0.0833333333333333)
#total 107.25
function calcTaxRate([float]$subtotal, [float]$tax)
{
$subtotalFmt = "{0:0.00}" -f $subtotal
$taxFmt = "{0:0.00}" -f $tax
#calc
$taxrate = $tax/$subtotal
$total = $subtotal * (1 + $taxrate) #calc using taxrate, not tax input param
$totalFmt = "{0:0.00}" -f $total
#pseudo right-justify hack
$subPadding = " " * ( ("$totalFmt".length) - ("$subtotalFmt".length) )
$taxPadding = " " * ( ("$totalFmt".length) - ("$taxFmt".length) )
#output
"sub {0}{1}" -f $subPadding, $subtotalFmt
"tax {0}{1} ({2})" -f $taxPadding, $taxFmt, $taxrate
"total $totalFmt"
}
- #round 12.3456 #12.35
#round 12.3456 3 #12.346
function round($value, $decimals=2)
{
[system.decimal]::round($value, $decimals)
}
- min F# console app examples, for breakpoint
System.Diagnostics.Debugger.Break() //ex 1 auto breakpoint
System.Console.ReadLine() |> ignore //ex 2
- visual studio command window
- shortcut keys: ctl + alt + A
COMMAND DESCRIPTION
build.rebuildSolution
cls clear screen
debug.breakpoints open breakpoints window
debug.disableAllBreakpoints
debug.enableAllBreakpoints
debug.watch2 open watch-2 window
file.copyFullPath
file.openContainingFolder
? "abc".Length 3
? x debug print x var/value
?? x debug quickwatch
Predefined Visual Studio Command Aliases
http://msdn.microsoft.com/en-us/library/c3a0kd3x.aspx
- ipconfig /release;
ipconfig /flushdns;
ipconfig /renew;
- p# cultureInfo
get-culture cmdlet
[system.threading.thread]::currentThread.currentUICulture
(get-culture).textInfo.toTitleCase("foo bar") #Foo Bar
- set-alias <alias> <function>
set-alias foo calcFooPiSquare
- xcopy x:\data\* x:\backup\data\ /s/h/q
xcopy x:\data\* x:\backup\data\ /s/h/q/d:01-01-2011 #files modified on or after date
xcopy x:\data\* x:\backup\data\ /s/h/q/exclude:x:\exclude.txt
xcopy x:\data\file.txt x:\backup\data\ /s/h/q
/e to copy empty folders
file: exclude.txt
.bmp
.pdf
.dll
.exe
.ini
.log
.suo
.temp
.user
\.git\
\.svn\
\bin\
\debug\
\images\
\obj\
\release\
thumbs.db
- hosts files
mac: /etc/hosts
windows: c:\windows\system32\drivers\etc\hosts
- p# copy windows hosts file
gc c:\windows\system32\drivers\etc\hosts | out-file x:\backup\data\hosts.txt -encoding utf8
- virtual pc, toggle fullscreen: (right-alt) + enter
- p# find all unique words/matches in file
use select-string allmatches with regex capture to show only match, not standard select-string output full line
- gi x:\foo.txt |
select-string "(\w+)" -allmatches |
%{
foreach($m in $_.matches) { #loop all matches found in line
$m.groups[0].value
}
} | sort -unique
- #one line
gi x:\foo.txt | select-string "(\w+)" -allmatches | %{foreach($m in $_.matches){$m.groups[0].value}} | sort -unique
- file attributes
attrib /?
#alt view file and folder attributes
gci x:\foo\ -rec
#view file attribute
attrib x:\foo\a.txt
#set readonly file attribute
attrib +r x:\foo\a.txt
#remove readonly file attribute
attrib -r x:\foo\a.txt
#recursive, files and folders
attrib +r x:\foo\* /s /d
attrib -r x:\foo\* /s /d
- reserved p# variables, do not use for var names
"$args"
"$input"
- p# REPL template for input loop processing, eg script calculator
requires entering input value only, not function/alias name
if function requires multiple params, split input param in function
#---------------------------------------------------
#template 1, min
function foo($string){$string} #function
while ($true) { #loop
$in = read-host "enter a value" #read input
foo($in) #call function
}
#---------------------------------------------------
#template 2, +ux
$host.ui.rawUI.windowTitle = "loop..." #set window title
function foo($string){$string} #function
while ($true) { #loop
$in = read-host "enter a value" #read input
if ($in -match "^(exit|quit|q)$") { #exit loop support
"exiting loop" #exit
break
}
else {
foo($in) #call function
}
}
#---------------------------------------------------
#template 3, anonymous function
while ($true) { #loop
$in = read-host "enter a value" #read input
if ($in -match "^(exit|quit|q)$") { #exit loop support
"exiting loop" #exit
break
}
else {
&{param($string) $string} $in #call anonymous function
}
}
#---------------------------------------------------
- p# set window title
$host.ui.rawUI.windowTitle = "main"
- regular expressions
- find html opening tags
<a[^>]*>
<form[^>]*>
- remove b html tags
search:<b[^>]*>(.*?)</b>
replace:\1
- regex match empty lines
REGEX DESCRIPTION
^\s*$ match empty line
^\s*$\r\n match empty line, with linebreak
- regex match duplicate lines in a text file, sort content first
search:^(.*)(\r?\n\1)+$
replace:\1
- regex match html anchor tags
works with multiple anchors on same line, and multiline using "dot matches newline"
the question mark in this regex ".*?" is what allows it to match multiples on same line
REGEX DESCRIPTION
<a[^>]*>.*?</a> match entire tag
(?<=<a[^>]*>).*?(?=</a>) match text only, including empty
--- regex to match
------------- lookbehind, match regex, then lookbehind and match anchor tag
-------- lookahead, match regex, then lookahead and match closing anchor tag
- regex lookaround - noncapturing groups - "lookaway" :)
NAME REGEX EXAMPLE DESCRIPTION MATCH
lookahead (?=R) A(?=B) match A, then lookahead and match B matches the A
A followed by B
negative lookahead (?!R) A(?!B) match A, then lookahead and match if NOT B matches the A
match A, as long as it's NOT followed by B
A NOT followed by B
lookbehind (?<=R) (?<=A)B match B, then lookbehind and match A matches the B
B preceeded by A
negative lookbehind (?<!R) (?<!A)B match B, then lookbehind and match if NOT A matches the B
match B, as long as it's NOT preceeded by A
B NOT preceeded by A
- p# dynamic array
(1..3)[1] #2
- p# html encode file, line by line
$file = "x:\foo.txt"
gc $file | %{htmlEncode($_)} > ($file + ".out") #x:\foo.txt.out
- p# html encode multiline string, here string
$hs = @"
#...
#...
"@
$hs | %{htmlencode $_}
- add-type -assembly system.web #calling add-type multiple times - ok
function htmlEncode($string)
{
[web.httputility]::htmlencode($string)
}
#getOutFileName x:\file.txt #x:\file.txt.out
function getOutFileName($infile)
{
[io.path]::getFileName($infile) + ".out"
}
function getOutFilePath($infile)
{
[io.path]::getdirectoryname($infile)
}
- html/url encoding
add-type -assembly system.web
[web.httputility]::htmlencode("<foo />")
[web.httputility]::htmldecode("<foo />")
[web.httputility]::urlencode("www.foo.com/?a=b")
[web.httputility]::urldecode("www.foo.com%2f%3fa%3db")
- loading .net assemblies into p#, add-type replaces loadWithPartialName (obsolete)
add-type -assembly system.web #load system web
add-type -assembly system.xml.linq #load linq xml
#add-type -assemblyName system.web #alt assemblyName param
#[system.reflection.assembly]::loadWithPartialName("system.web") #obsolete, use in p1
- asp.net mvc routing, redirect
internal: use IIS URL rewrite
external: use Controller.RedirectPermanent() and Controller.Redirect() to redirect to other domains
public RedirectResult Redirect()
{
var url = "http://www.expressionsoftware.com/";
return RedirectPermanent(url); //301 permanent redirect
//return Redirect(url); //302 temporary redirect
}
- open files with p# invoke-item cmdlet
#open file in default text editor, eg notepad
ii x:\temp\foo.txt
#open all text files
gci x:\temp\* -inc *.txt -rec -force | %{ii $_.fullname}
- css even-odd background color
tr:nth-child(odd)
{
background-color: #fff;
}
tr:nth-child(even)
{
background-color: gainsboro;
}
- ms minifier
$infile = 'x:\file.debug.js'
$outfile = 'x:\file.js'
$m = 'x:\lib\microsoftAjaxMinifier\v4\ajaxMin.exe'
&$m -js -clobber $infile -out $outfile -enc:out 'utf-8'
- html 5
<!doctype html>
<html lang=en>
<head>
<title></title>
<meta charset=utf-8>
</head>
<body>
</body>
</html>
- browser indent outdent margin
document.body.style.marginTop = "1000px";
document.body.style.marginLeft = "-100px";
document.body.style.marginBottom = "200px";
- hex color scale #000000 - ffffff, dark to light
dark to light 0123456789abcdef 0-9a-f
light to dark fedcba9876543210 f-a9-0
- webpage text and background color dom js
- black background #000, ghost text #111
document.body.style.backgroundColor = "#000"; document.body.style.color = "#111";
- white background #fff, ghost text #eee
document.body.style.backgroundColor = "#fff"; document.body.style.color = "#eee";
- wicked terminal green
document.body.style.backgroundColor = "#000"; document.body.style.color = "#1ca62e";
- all elements
var x = document.getElementsByTagName("*");
for(var i=0; i<x.length; i++) {
x[i].style.backgroundColor = "#000";
x[i].style.color = "#aaa"
}
- text editor colors font
https://www.expressionsoftware.com/apps/texteditor/
var x = document.getElementsByTagName("textarea")[0];
x.style.backgroundColor = "#000";
x.style.color = "#444";
x.style["font-family"] = "verdana"
x.style.borderColor = "#000";
x.style.margin = "0";
x.style.padding = "1em 0 0 2em";
- set browser title date
function formatDateTime(date) //12:34:00
{
date = date || new Date();
return date.getHours() + ':' + date.getMinutes() + ':' + date.getSeconds();
}
(function()
{
document.title = formatDateTime() + ' ' + document.title;
}()); //immediate
- browser scroll
document.body.scrollTop = 500; //c
$(window).scrollTop(500); //cfi
- windows temp folders
win 7/8: c:\users\nelson\appdata\local\temp
- remote desktop services terminal services admin/console
$ts = 'c:\windows\system32\mstsc.exe'
&$ts /v:DEV01 /f /admin #2008+
&$ts /v:DEV01 /f /console #2003
- restart/shutdown windows
shutdown /s /f /t 0 #shutdown 0 seconds
shutdown /r /f /t 0 #restart 0 seconds
shutdown /r /f /t 0 /m \\10.0.0.0
shutdown /r /f /t 0 /m \\DEV01
12/4/13
notes
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