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Is there a command to refresh environment variables from the command prompt in Windows?
...
You can capture the system environment variables with a vbs script, but you need a bat script to actually change the current environment variables, so this is a combined solution.
Create a file named resetvars.vbs containing this code, and save it on the path:
Set oShell = WScript...
Can Powershell Run Commands in Parallel?
I have a powershell script to do some batch processing on a bunch of images and I'd like to do some parallel processing. Powershell seems to have some background processing options such as start-job, wait-job, etc, but the only good resource I found for doing parallel work was writing the text of a...
How to do associative array/hashing in JavaScript
... = {}; var obj2 = {}; var table= {}; table[obj1] = "A"; table[obj2] = "B"; alert(table[obj1]); //displays B, because it can't differentiate between keys obj1 and obj2; they're both converted to string and just become something like "Object". Total fail, and makes type-safe serialization with refere...
Do HTML5 custom data attributes “work” in IE 6?
...e value of data-geoff using
var geoff = document.getElementById("geoff");
alert(geoff.getAttribute("data-geoff"));
See MSDN. And although it is mentioned there that you need IE7 to get this to work, I tested this a while ago with IE6 and it functioned correctly (even in quirks mode).
But this ha...
Which method performs better: .Any() vs .Count() > 0?
...ter than Any().
When you run Table.Any(), it will generate something like(alert: don't hurt the brain trying to understand it)
SELECT
CASE WHEN ( EXISTS (SELECT
1 AS [C1]
FROM [Table] AS [Extent1]
)) THEN cast(1 as bit) WHEN ( NOT EXISTS (SELECT
1 AS [C1]
FROM [Table] AS [Exten...
What's the difference between a continuation and a callback?
...inuation never returns.
Consider the function:
function add(x, y, c) {
alert("before");
c(x+y);
alert("after");
}
(I use Javascript syntax even though Javascript doesn't actually support first-class continuations because this was what you gave your examples in, and it will be more compr...
Why was the arguments.callee.caller property deprecated in JavaScript?
...d)
return arguments.callee(true);
if (this !== global)
alert("This is: " + this);
else
alert("This is the global");
}
sillyFunction();
Anyhow, EcmaScript 3 resolved these issues by allowing named function expressions, e.g.:
[1,2,3,4,5].map(function factorial(n) {
...
Detect IE version (prior to v9) in JavaScript
... to make style exceptions, or, if you require, you can add some simple JavaScript:
(function ($) {
"use strict";
// Detecting IE
var oldIE;
if ($('html').is('.lt-ie7, .lt-ie8, .lt-ie9')) {
oldIE = true;
}
if (oldIE) {
// Here's your JS for IE..
} else {...
Test for existence of nested JavaScript object key
...r Steele:
var level3 = (((test || {}).level1 || {}).level2 || {}).level3;
alert( level3 );
In fact that whole article is a discussion of how you can do this in javascript. He settles on using the above syntax (which isn't that hard to read once you get used to it) as an idiom.
...
Jquery - How to make $.post() use contentType=application/json?
...
I ended up adding the following method to jQuery in my script:
jQuery["postJSON"] = function( url, data, callback ) {
// shift arguments if data argument was omitted
if ( jQuery.isFunction( data ) ) {
callback = data;
data = undefined;
}
return j...