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Environment variable to control java.io.tmpdir?
... there's a way to do this other than on Windows.
On Windows, OpenJDK's get_temp_directory() function makes a Win32 API call to GetTempPath(); this is how on Windows, Java reflects the value of the TMP environment variable.
On Linux and Solaris, the same get_temp_directory() functions return a stat...
How to get subarray from array?
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answered Sep 24 '11 at 10:48
Alex K.Alex K.
154k2424 gold badges236236 silver badges263263 bronze badges
...
What's wrong with nullable columns in composite primary keys?
...
10
In Sql Server a unique constraint that has a nullable column, allows the value 'null' in that column only once (given identical values for ...
How to disable a link using only CSS?
...ome opacity: .2
– DNRN
Feb 4 '14 at 10:13
4
This now works in all modern browsers including IE 11...
How to generate random number in Bash?
... shell arithmetic. For instance, to generate a random number between 1 and 10 (inclusive):
$ echo $((1 + RANDOM % 10))
3
The actual generator is in variables.c, the function brand(). Older versions were a simple linear generator. Version 4.0 of bash uses a generator with a citation to a 1985 pape...
What's the purpose of using braces (i.e. {}) for a single-line if or loop?
... to also modify i when we increment j:
int j = 0;
for (int i = 0 ; i < 100 ; ++i)
if (i % 2 == 0)
j++;
i++;
Oh no! Coming from Python, this looks ok, but in fact it isn't, as it's equivalent to:
int j = 0;
for (int i = 0 ; i < 100 ; ++i)
if (i % 2 == 0)
j++;...
Laravel - Eloquent or Fluent random row
...m method for collections:
User::all()->random();
User::all()->random(10); // The amount of items you wish to receive
Laravel 4.2.7 - 5.1:
User::orderByRaw("RAND()")->get();
Laravel 4.0 - 4.2.6:
User::orderBy(DB::raw('RAND()'))->get();
Laravel 3:
User::order_by(DB::raw('RAND()'))->g...
Custom exception type
...){
Object.setPrototypeOf(CustomError, Error);
} else {
CustomError.__proto__ = Error;
}
Alternative: use Classtrophobic framework
Explanation:
Why extending the Error class using ES6 and Babel is a problem?
Because an instance of CustomError is not anymore recognized as such.
class Cus...
How do you tell if a string contains another string in POSIX sh?
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answered Jan 10 '12 at 23:01
fjarlqfjarlq
1,86511 gold badge1313 silver badges88 bronze badges
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