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What's the difference between HEAD^ and HEAD~ in Git?
When I specify an ancestor commit object in Git, I'm confused between HEAD^ and HEAD~ .
15 Answers
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Read binary file as string in Ruby
...the entire file in a string.
After that, you probably want to file.close. If you don’t do that, file won’t be closed until it is garbage-collected, so it would be a slight waste of system resources while it is open.
sha...
Get a random boolean in python?
...ite fast, but I found that random.getrandbits(1) to be quite a lot faster. If you really want a boolean instead of a long then
bool(random.getrandbits(1))
is still about twice as fast as random.choice([True, False])
Both solutions need to import random
If utmost speed isn't to priority then ran...
Installing multiple instances of the same windows service on a server
...
REM Uninstall
InstallUtil.exe -u YourService.exe
pause
EDIT:
Note sure if I missed something, here is the ServiceInstaller Class (adjust as required):
using System.Configuration;
namespace Made4Print
{
partial class ServiceInstaller
{
/// <summary>
/// Required de...
recursion versus iteration
...t to say that everywhere recursion is used a for loop could be used? And if recursion is usually slower what is the technical reason for ever using it over for loop iteration?
...
Remove all subviews?
... situation is muddled up by the fact that NSView and UIView handle things differently. For NSView (desktop Mac development only), you can simply use the following:
[someNSView setSubviews:[NSArray array]];
For UIView (iOS development only), you can safely use makeObjectsPerformSelector: because t...
Using .text() to retrieve only text not nested in child tags
If I have html like this:
25 Answers
25
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Replace only some groups with Regex
...
A good idea could be to encapsulate everything inside groups, no matter if need to identify them or not. That way you can use them in your replacement string. For example:
var pattern = @"(-)(\d+)(-)";
var replaced = Regex.Replace(text, pattern, "$1AA$3");
or using a MatchEvaluator:
var repl...
What is the difference between an abstract function and a virtual function?
What is the difference between an abstract function and a virtual function? In which cases is it recommended to use virtual or abstract? Which one is the best approach?
...
How to handle change of checkbox using jQuery?
...ou can use Id of the field as well
$('#checkbox1').change(function() {
if($(this).is(":checked")) {
//'checked' event code
return;
}
//'unchecked' event code
});
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