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How can I compare two dates in PHP?
...abase the date looks like this 2011-10-2
Store it in YYYY-MM-DD and then string comparison will work because '1' > '0', etc.
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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...
Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
... problems if the compiler had to "arrange for another behaviour" (e.g. use extra instructions to check for potential overflow and calculate differently in that case).
It is also worth noting that "undefined behaviour" doesn't mean "doesn't work". It means that the implementation is allowed to do w...
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...
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)
...
Explicit vs implicit SQL joins
...pe | table | type | possible_keys | key | key_len | ref | rows | Extra |
+----+-------------+-------+------+---------------+------+---------+--------------+------+-------+
| 1 | SIMPLE | b | ALL | PRIMARY | NULL | NULL | NULL | 986 | |
| 1 | SIMPLE ...
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...
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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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 ...