From: angus <angus@...>
Date: 2003-08-29T21:11:39+09:00
Subject: Re: multiply all array with array

> say, i have:
> a = [1,2,3] and b = [4,5,6]
> and i want to get another array, with c[ix] = a[ix] * b[ix].
> (i want to get c = [4,10,18])

a.zip(b).map { |x,y| x*y } # => [4, 10, 18]