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What really happens in a try { return x; } finally { x = null; } statement?
...- at the IL level you can't return from inside an exception-handled block. It essentially stores it in a variable and returns afterwards
i.e. similar to:
int tmp;
try {
tmp = ...
} finally {
...
}
return tmp;
for example (using reflector):
static int Test() {
try {
return SomeNu...
Super-simple example of C# observer/observable with delegates
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The observer pattern is usually implemented with events.
Here's an example:
using System;
class Observable
{
public event EventHandler SomethingHappened;
public void DoSomething() =>
SomethingHappened?.Invoke(this, EventArgs.Empty);
}
class Obser...
What is the _references.js used for?
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edited Dec 16 '16 at 15:41
Hakan Fıstık
9,09888 gold badges5757 silver badges8686 bronze badges
...
Remove a string from the beginning of a string
...
Plain form, without regex:
$prefix = 'bla_';
$str = 'bla_string_bla_bla_bla';
if (substr($str, 0, strlen($prefix)) == $prefix) {
$str = substr($str, strlen($prefix));
}
Takes: 0.0369 ms (0.000,036,954 seconds)
And with:
$prefix...
How do I install cygwin components from the command line?
...o tool specifically in the 'setup.exe' installer that offers the
functionality of apt-get. There is, however, a command-line package installer
for Cygwin that can be downloaded separately, but it is not entirely stable and
relies on workarounds.
apt-cyg: http://github.com/transcode-open/apt-cyg
C...
Reverse / invert a dictionary mapping
...
For Python 2.7.x
inv_map = {v: k for k, v in my_map.iteritems()}
For Python 3+:
inv_map = {v: k for k, v in my_map.items()}
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How do you add a Dictionary of items into another Dictionary
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edited Jul 14 '17 at 18:23
Dima
22.7k55 gold badges4949 silver badges8181 bronze badges
...
Remove last item from array
...
Use splice(startPosition, deleteCount)
array.splice(-1,1)
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How to redirect to a 404 in Rails?
...'d like to 'fake' a 404 page in Rails. In PHP, I would just send a header with the error code as such:
11 Answers
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How to send multiple data fields via Ajax? [closed]
I'm stuck: I'm trying to submit a form using AJAX, but I can't find a way to send multiple data fields via my AJAX call.
12...