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Simplest code for array intersection in javascript
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If your environment supports ECMAScript 6 Set, one simple and supposedly efficient (see specification link) way:
function intersect(a, b) {
var setA = new Set(a);
var setB = new Set(b);
var intersection = new Set([...setA].filter(x => setB.has(x)));
retur...
What does a double * (splat) operator do
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I would assume this is useful for setting optional hash parameters for a method
– bigpotato
Dec 18 '13 at 22:05
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Most common C# bitwise operations on enums
For the life of me, I can't remember how to set, delete, toggle or test a bit in a bitfield. Either I'm unsure or I mix them up because I rarely need these. So a "bit-cheat-sheet" would be nice to have.
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While loop to test if a file exists in bash
I'm working on a shell script that does certain changes on a txt file only if it does exist, however this test loop doesn't work, I wonder why?
Thank you!
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Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
... pretty advanced. Consider this:
scala> import collection.immutable.BitSet
import collection.immutable.BitSet
scala> val bits = BitSet(1, 2, 3)
bits: scala.collection.immutable.BitSet = BitSet(1, 2, 3)
scala> val shifted = bits map { _ + 1 }
shifted: scala.collection.immutable.BitSet = B...
Is git not case sensitive?
...It is going to depend on the core.ignorecase configuration value, which is set to false in case-sensitive filesystems and true in msysgit on Windows.
core.ignorecase
If true, this option enables various workarounds to enable git to work better on filesystems that are not case sensitive, lik...
Git search for string in a single file's history
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How to trigger XDebug profiler for a command line PHP script?
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You can pass INI settings with the -d flag: php -d xdebug.profiler_enable=On script.php.
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What does -> mean in Python function definitions?
...tly noticed something interesting when looking at Python 3.3 grammar specification :
7 Answers
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MySQL Insert into multiple tables? (Database normalization?)
...int unsigned default 0;
insert into users (username) values (p_username);
set v_user_id = last_insert_id(); -- save the newly created user_id
insert into user_profile (user_id, homepage) values (v_user_id, p_homepage);
end#
delimiter ;
call insert_user_and_profile('f00','http://www.f00.com');
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