From: Jeff Wood <jeff.darklight@...>
Date: 2005-10-17T17:32:43+09:00
Subject: Re: Editing in Ruby

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I agree with Greg.
 Add a bit of history capture to your .irbrc script and boom, you've got an
auto-complete, code by exploration environment.
 j.

 On 10/16/05, Greg Millam <ruby-talk@lethalcode.net> wrote:
>
> Shreyas wrote:
> > In any case, I was wondering if anyone knew either (a) how to get a
> > list of all the functions in ruby exported to an API file, or (b) if
> > there is an editor out there that can help out. Many times when I'm
> > programming, it's nice to just be able to see what the valid
> > functions are for the object in question, rather than having to look
> > it up in the API documentation.
>
> Use irb with irb/completion
>
> $ irb
> irb(main):001:0> require 'irb/completion'
> =3D> true
> irb(main):002:0> f =3D "Hello, world!"
> =3D> "Hello, world!"
> irb(main):003:0> f.downcase
> f.downcase f.downcase!
> irb(main):003:0> f.downcase
>
> If you hit f.down<tab>, it'll complete to downcase. hit it twice, and
> it'll show "f.downcase f.downcase!"
>
> If you want to find other methods, try using f.methods.grep
>
> irb(main):004:0> f.methods.grep /case/
> =3D> ["downcase", "downcase!", "casecmp", "swapcase", "swapcase!",
> "upcase", "upcase!"]
>
> f.case<tab> will pull out f.casecmp for you.
>
> This works with any valid object in irb.
>
> irb(main):005:0> i =3D 1
> =3D> 1
> irb(main):006:0> i.methods.grep /case/
> =3D> []
> irb(main):007:0> i.methods.grep /zero/
> =3D> ["zero?", "nonzero?"]
>
>
> It's very handy, and I use it a lot, even though I've been rubying for
> about 3 years.
>
> Hope that helps you, too!
>
> - Greg
>
>


--
"http://ruby-lang.org -- do you ruby?"

Jeff Wood

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