From: Love U Ruby <lists@...>
Date: 2013-07-06T03:25:18+09:00
Subject: what is Vector#map2 ?

Hi,

Can anyone give me one example to understand the functionality of
Vector#map2(http://yard.ruby-doc.org/stdlib-2.0/Vector.html#collect2-instance_method).
I understand the Vector#map.

require 'matrix'

a = [1, 2, 3, 4]
m = Vector[*a] # => Vector[1, 2, 3, 4]
m.map{|i| i * i } # => Vector[1, 4, 9, 16]

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