From: Allen Lee <allenlooplee@...>
Date: 2009-11-28T15:17:53+09:00
Subject: Re: closures

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Hi Burlsm,

I think the following is what you want:

def make_adder(n)
  lambda { |x| x + n }
end

or the following new lambda syntax if you are using Ruby 1.9 or later:

def make_adder(n)
  ->(x) { x + n }
end

Hope that helps.

allenlooplee

On Sat, Nov 28, 2009 at 2:10 PM, Burlsm <charliesmith001@gmail.com> wrote:

> hi
>
> i'm having a little trouble with closures and i'd like to know what
> the equivalent code for the canonical make-adder procedure would in
> ruby,
>
> in scheme it would be like
>
> (define (make-adder n)
>  (lambda (x) (+ x n))
>
> thanks in advance
>
>

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