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What is the fastest or most elegant way to compute a set difference using Javascript arrays?
...don't know if this is most effective, but perhaps the shortest
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(function(x) { return B.indexOf(x) < 0 })
console.log(diff);
Updated to ES6:
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(x => !B.includes(x) );
console.log(diff);
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How to show method parameter tooltip in C#?
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edited May 31 '13 at 16:55
JYelton
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data type not understood
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JoshAdelJoshAdel
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generating GUID without hyphen
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BonshingtonBonshington
3,58022 gold badges2222 silver badges2020 bronze badges
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Open a project in a new window in IntelliJ after “accidentally” clicking remember decision
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143
It can be changed in in File | Settings/Preferences | Appearance & Behavior | System Setting...
Which mime type should I use for mp3
I'm trying to decide which mime type to choose for returning mp3 data (served up by php)
5 Answers
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Docker: adding a file from a parent directory
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231
You can build the Dockerfile from the parent directory:
docker build -t <some tag> -f &l...
difference between each.with_index and each_with_index in Ruby?
...dex do |value, index|
puts "#{index}: #{value}"
end
Outputs:
2: foo
3: bar
4: baz
0: foo
1: bar
2: baz
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