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An “and” operator for an “if” statement in Bash
...(man test).
As some find lines like if test -f filename; then foo bar; fi, etc. annoying, on most systems you find a program called [ which is in fact only a symlink to the test program. When test is called as [, you have to add ] as the last positional argument.
So if test -f filename is basically ...
Why do we need C Unions?
...le types together:
enum Type { INTS, FLOATS, DOUBLE };
struct S
{
Type s_type;
union
{
int s_ints[2];
float s_floats[2];
double s_double;
};
};
void do_something(struct S *s)
{
switch(s->s_type)
{
case INTS: // do something with s->s_ints
break;
case F...
How to change highlighted occurrences color in Eclipse's sidebar?
...rences" enabled in Eclipse, placing the cursor on any type/variable/method/etc will highlight all occurrences in the text editor and place a faint bar in the right ruler to show you the location of other occurrences in the file.
...
Regular expression for a hexadecimal number?
..., depends on the flavor you need to use (php, javascript, python , golang, etc.).
This answer was taken from:http://ult-tex.net/info/perl/
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foll...
Laravel redirect back to original destination after login
...n Redirect::to($redirect);
}
});
// on controller
public function get_login()
{
$this->layout->nest('content', 'auth.login');
}
public function post_login()
{
$credentials = [
'username' => Input::get('email'),
'password' => Input::get('password')
];
...
iOS Detect 3G or WiFi
...
Shouldn't you call [reachability stopNotifier] after you have the status?
– zekel
Nov 9 '11 at 18:41
3
...
Jackson enum Serializing and DeSerializer
...
I really dislike this solution for the simple fact that you introduce two sources of truth. The developer will always have to remember to add the name in two places. I much prefer a solution that just does the right thing without...
Google fonts URL break HTML5 Validation on w3.org
...e special characters would need to be encoded by HTML rules (e.g. &amp etc). The user agent is then expected to follow RFC 3987 and convert the IRI to percent encoded UTF-8 before submitting it over HTTP (tools.ietf.org/html/rfc3987).
– Mikko Rantalainen
O...
Who is calling the Java Thread interrupt() method if I'm not?
...ys why there could be interruptions still, may be timeouts, JVM interrupts etc.
If I'm never ever interrupting other threads myself using interrupt() (say because I'm using other means to cancel my working threads, like poison pills and while (!cancelled) style loop [as both explained in JCIP]),...
How to merge two arrays in JavaScript and de-duplicate items
...
With Underscore.js or Lo-Dash you can do:
console.log(_.union([1, 2, 3], [101, 2, 1, 10], [2, 1]));
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js"></script>
http://underscorejs.org/#union
http://lodash.com/docs#union
...