From: "Shot (Piotr Szotkowski)" <shot@...>
Date: 2009-10-10T09:08:14+09:00
Subject: Re: Backporting Enumerator.new { ... } to Ruby 1.8.7

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Roger Pack:

>> Unfortunately, my code heavily uses lazy-evaluated, nested Enumerator
>> objects. What is the sanest way to backport the following example
>> so that it works more-or-less in the same way under Ruby 1.8.7 as
>> it does under Ruby 1.9?

> looks like there's a couple ways
> one
> require 'backports'
> # leave the original code as is

Oh, wow! How could I have missed this? (Does not show up on =E2=80=98Ruby
backporting=E2=80=99 Google queries, but still=E2=80=A6) This plus some ama=
zingly
minimal monkey-patching got me a backport in two hours or so. :)

> or this one

> require 'generator'
> def multiplier param
>   Generator.new do |yielder|

=E2=80=A6AND I have missed Ruby 1.8=E2=80=99s stdlib=E2=80=99s Generator! A=
 double shame,
but I=E2=80=99m happy as a clam nevertheless =E2=80=93 I=E2=80=99ll finally=
 be able to nicely
profile my PhD code!

(Even if the results do not necessarily reflect Ruby 1.9=E2=80=99s bottlene=
cks,
I guess they will be close enough, and being able to profile my code
will most probably turn the rest of the month into a very interesting
adventure with RuDy=C2=B9.)

=C2=B9 http://app.euruko2009.org/talks/21-announcing-rudy-write-ruby-native=
-extensions-in-d-programming-language

Thanks again, Roger, I can=E2=80=99t say enough how happy I am with the abo=
ve.

=E2=80=94 Shot
--=20
Idea: A James Cameron-directed prequel entitled
=E2=80=98T\0: The Null Terminator=E2=80=99.   [Matthew Baldwin]

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