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Is there a good way to attach JavaScript objects to HTML elements?
...gly to define this method jquery stores keys into a global dictionary in a string attribute on each element. The name of this string attribute is randomly generated when jquery is first loaded. (Suggesting that there isn't a good way to do there isn't a nicer way to do this only using the DOM)
...
Why are side-effects modeled as monads in Haskell?
...ns are useless if we can't chain them together. Consider
getLine :: IO String ~ RealWorld -> (String, RealWorld)
getContents :: String -> IO String ~ String -> RealWorld -> (String, RealWorld)
putStrLn :: String -> IO () ~ String -> RealWorld -&...
How to identify CAAnimation within the animationDidStop delegate?
...for this very purpose. Just take out the call to setValue and move the key string to the addAnimation call. For example:
[[hearingAidHalo layer] addAnimation:animation forKey:@"Throb"];
Then, in your animationDidStop callback, you can do something like:
if (theAnimation == [[hearingAidHalo layer...
Sorting a vector of custom objects
...
A simple example using std::sort
struct MyStruct
{
int key;
std::string stringValue;
MyStruct(int k, const std::string& s) : key(k), stringValue(s) {}
};
struct less_than_key
{
inline bool operator() (const MyStruct& struct1, const MyStruct& struct2)
{
ret...
Why not abstract fields?
...ised in its constructor (untested code):
abstract class Base {
final String errMsg;
Base(String msg) {
errMsg = msg;
}
abstract String doSomething();
}
class Sub extends Base {
Sub() {
super("Sub message");
}
String doSomething() {
return e...
How to scale a UIImageView proportionally?
...ound on the Apple Dev forums.
In a project-wide .h -
@interface UIImage (Extras)
- (UIImage *)imageByScalingProportionallyToSize:(CGSize)targetSize;
@end;
Implementation:
@implementation UIImage (Extras)
- (UIImage *)imageByScalingProportionallyToSize:(CGSize)targetSize {
UIImage *sourceI...
What requirement was the tuple designed to solve?
...unrelated values without creating a type in only one way:
void M(int foo, string bar, double blah)
Logically this is exactly the same as a method M that takes one argument which is a 3-tuple of int, string, double. But I hope you would not actually make:
class MArguments
{
public int Foo { g...
Yes/No message box using QMessageBox
...))
{
// do stuff
}
It is generally a good Qt habit to put code-level Strings within a tr("Your String") call.
(QMessagebox as above works within any QWidget method)
EDIT:
you can use QMesssageBox outside a QWidget context, see @TobySpeight's answer.
If you're even outside a QObject conte...
How to deal with a slow SecureRandom generator?
...RNG, do something like this:
SecureRandom.getInstance("SHA1PRNG");
What strings are supported depends on the SecureRandom SPI provider, but you can enumerate them using Security.getProviders() and Provider.getService().
Sun is fond of SHA1PRNG, so it's widely available. It isn't especially fast ...
How do I start a program with arguments when debugging?
...suggest using the directives like the following:
static void Main(string[] args)
{
#if DEBUG
args = new[] { "A" };
#endif
Console.WriteLine(args[0]);
}
Good luck!
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