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How can I get the intersection, union, and subset of arrays in Ruby?
...union
def |(other)
@set | other.set
end
end
x = MultiSet.new([1,1,2,2,3,4,5,6])
y = MultiSet.new([1,3,5,6])
p x - y # [2,2,4]
p x & y # [1,3,5,6]
p x | y # [1,2,3,4,5,6]
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[root@localhost ~]# vi /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost...
How to count certain elements in array?
...ar count = 0;
for(var i = 0; i < array.length; ++i){
if(array[i] == 2)
count++;
}
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Need a simple explanation of the inject method
...
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You can think of the first block argument as an accumulator: the result of each run of the blo...
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Concatenate two slices in Go
I'm trying to combine the slice [1, 2] and the slice [3, 4] . How can I do this in Go?
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I have a dictionary which looks like this: di = {1: "A", 2: "B"}
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...ging Library (PIL), ImageMagick, and wxPython, all of which require Python 2.x.
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JavaScript function similar to Python range()
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