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C# 4.0 optional out/ref arguments
...c class OptionalOut<Type>
{
public Type Result { get; set; }
}
Then you can use it as follows:
public string foo(string value, OptionalOut<int> outResult = null)
{
// .. do something
if (outResult != null) {
outResult.Result = 100;
}
return value;
}
publ...
How to print to console when using Qt
...dOut()
{
static QTextStream ts( stdout );
return ts;
}
You could then call as follows:
qStdOut() << "std out!";
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How can I write output from a unit test?
...MSDN as "The test framework automatically sets the property, which you can then use in unit tests."
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How to automatically reload a page after a given period of inactivity
...
If you want to refresh the page if there is no activity then you need to figure out how to define activity. Let's say we refresh the page every minute unless someone presses a key or moves the mouse. This uses jQuery for event binding:
<script>
var time = new Date().ge...
How to cat a file containing code?
...
trailing blanks) is seen. All of the lines read up to that point are
then used as the standard input for a command.
The format of here-documents is:
<<[-]word
here-document
delimiter
No parameter expansion, command substitution, arithmetic expansio...
Is VB really case insensitive?
...auto-correct by cheating. Right-click on a vb file and select "Open With". Then pick something like "XML (Text) Editor". You will lose all the VB-specific functionality like auto-correct.
– Jonathan Allen
Feb 20 '10 at 20:03
...
Password masking console application
...between the backspace characters ('\b'). "\b \b" takes you one place back, then prints a space (which takes you one place forward) and then takes you back again, so you end up where the deleted '*' character was.
– dtb
Aug 4 '10 at 10:23
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How to prevent page scrolling when scrolling a DIV element?
... browser's native scrolling altogether (when cursor is inside the DIV) and then manually scrolling the DIV with JavaScript (by setting its .scrollTop property). An alternative and IMO better approach would be to only selectively disable the browser's scrolling in order to prevent the page scroll, bu...
What are -moz- and -webkit-? [duplicate]
... considered good practice to specify the vendor-prefixed version first and then the non-prefixed version, in order that the non-prefixed property will override the vendor-prefixed property-settings once it's implemented; for example:
.elementClass {
-moz-border-radius: 2em;
-ms-border-radiu...
Object comparison in JavaScript [duplicate]
... Slow and more generic.
Compares objects without digging into prototypes, then compares properties' projections recursively, and also compares constructors.
This is almost correct algorithm:
function deepCompare () {
var i, l, leftChain, rightChain;
function compare2Objects (x, y) {
var ...