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Why is using “for…in” for array iteration a bad idea?
...ll display:
5
*/
Also consider that JavaScript libraries might do things like this, which will affect any array you create:
// Somewhere deep in your JavaScript library...
Array.prototype.foo = 1;
// Now you have no idea what the below code will do.
var a = [1, 2, 3, 4, 5];
fo...
Total number of items defined in an enum
...whole new array just to get a fixed length, which seems... well, horrible. Does anyone know if this approach does indeed incur dynamic allocation? If so, for certain use cases it seems far and away the most performant solution if not the most flexible.
– J Trana
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Using Server.MapPath in external C# Classes in ASP.NET
...Path works great of course for ASPX and their code-behind pages, but that doesn't exist in another class file. I tried HostingEnvironment.MapPath() , but that complains that the relative virtual path isn't allowed. Any thoughts?
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How to get the selected radio button’s value?
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You can do something like this:
var radios = document.getElementsByName('genderS');
for (var i = 0, length = radios.length; i < length; i++) {
if (radios[i].checked) {
// do whatever you want with the checked radio...
How to convert SecureString to System.String?
... SecureString by creating a System.String out of it aside , how can it be done?
11 Answers
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jQuery - select all text from a textarea
...lected every time they try to move the caret using their mouse, you should do this using the focus event, not the click event. The following will do the job and works around a problem in Chrome that prevents the simplest version (i.e. just calling the textarea's select() method in a focus event hand...
How to easily map c++ enums to strings
...like structure. I.e. it can also add entries to std::unordered_map
If you don't like writing these helpers, boost::assign offers the same functionality out of the box.
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Unable to load SOS in WinDbg
...e a memory dump I took from a running ASP.NET 4 site hosted in IIS 7 on Windows Server 2008 (x86) and downloaded to my local machine.
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Making macOS Installer Packages which are Developer ID ready
...rty List" section. pkgbuild -root generates the component packages, if you don't need to change any of the default properties you can omit the --component-plist parameter in the following command.
productbuild --synthesize results in a Distribution Definition.
$ pkgbuild --root ./HelloWorld.app \
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In Objective-C why should I check if self = [super init] is not nil?
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For example:
[[NSData alloc] initWithContentsOfFile:@"this/path/doesn't/exist/"];
[[NSImage alloc] initWithContentsOfFile:@"unsupportedFormat.sjt"];
[NSImage imageNamed:@"AnImageThatIsntInTheImageCache"];
... and so on. (Note: NSData might throw an exception if the file doesn't exist). ...