From: Brian Candler <b.candler@...>
Date: 2009-01-14T19:17:45+09:00
Subject: Re: Point free (pointless) programming in ruby?

> 1) Is there a neater way of expressing a sequence of function
>     compositions in Ruby?

Maybe you could define an Array#to_proc. e.g.

class Array
  def to_proc
    lambda { |src| inject(src) { |memo,proc| proc[memo] } }
  end
end

a1 = lambda { |x| x+"a1" }
b1 = lambda { |x| x+"b1" }
c1 = lambda { |x| x+"c1" }
p lambda(&[a1,b1,c1])["test"]

src = ["foo","bar","baz"]
p src.map(&[a1, b1, c1])


def a(x); x+[1]; end
def b(x); x+[2]; end

src = [[], [0], [0,0]]

p src.map(&[method(:a), method(:b)])
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