From: Love U Ruby <lists@...>
Date: 2013-07-06T04:22:20+09:00
Subject: Re: what is Vector#map2 ?

Mike Stok wrote in post #1114545:
> On 2013-07-05, at 2:49 PM, sto.mar@web.de wrote:
>
>>> m = Vector[*a] # => Vector[1, 2, 3, 4]
>> => [7, 16, 27]

I am using `sublimeREPL`.

1] pry(main)> require "matrix"
=> true
[2] pry(main)> $ Vector#collect2

From: /home/kirti/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/2.0.0/matrix.rb @ 
line 1630:
Owner: Vector
Visibility: public
Number of lines: 8

def collect2(v) # :yield: e1, e2
  raise TypeError, "Integer is not like Vector" if v.kind_of?(Integer)
  Vector.Raise ErrDimensionMismatch if size != v.size
  return to_enum(:collect2, v) unless block_given?
  Array.new(size) do |i|
    yield @elements[i], v[i]
  end
end
[3] pry(main)> ri Vector#collect2
error: 'Vector' not found
[4] pry(main)>

Getting error..

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