From: jtprince <jtprince@...>
Date: 2011-02-22T14:45:31+09:00
Subject: Re: Re-learning the library

> After a long time I haven't touched Ruby I want to come back. I want to
> refresh my memory about the various methods that come with the built-in
> classes; e.g., String, Array, Hash. So I do, for example, "ri String"
> and here's a problem: I get a long list of methods but some of them are
> defined by some gem or 3rd party library. That's a problem, because I
> want to see only the methods defined by Ruby itself. How do I do this?

ri --no-gems Enumerable#collect
ri --help # for controls (--no-system --no-site --no-home etc.)