Re: ruby rookie needs help with "ri" command

On Sun, Jun 23, 2019 at 4:06 PM Walter Lee Davis <[email protected]> wrote:

> You have the option at install time to install the documentation (what ri
> reads from) or not. If your particular Ruby was installed with --no-ri
> --no-rdoc then there is nothing for it to read from. Personally, I use a
> desktop documentation reader called Dash (Mac only), and I am sure there
> are similar utilities available for Windows. There's also the full
> documentation available at https://ruby-lang.org
>
> And I just found this, which may as well have been written by you ;-)
>
>
> https://stackoverflow.com/questions/3178900/how-do-i-install-the-ruby-ri-documentation
>
>
In particular, doubleDown's nailed it for me. I've been struggling (on and
off) with trying to get ri to work properly in Windows for years; I'd never
read his advice to run `rdoc --all --ri` in a Ruby source folder. (I just
saw on another site a suggestion to run that command in the Ruby
installation root directory; I just did it in the toplevel of the Ruby
source, just in case, so I don't know if that will work).

I also followed that with `gem rdoc --all --ri --no-rdoc` to make sure my
currently-installed gems get documented too.


> Walter
>
> > On Jun 23, 2019, at 5:07 PM, Barry Kimelman <[email protected]>
> wrote:
> >
> > I am a ruby rookie with a question
> >
> > I am running ruby 2.6.0p0 (2018-12-25 revision 66547) [x64-mingw32]
> > my laptop is windows 10
> >
> > I was going through the PDF versionb of a ruby intro book and I have a
> question about the "ri" command. The PDF file shows the following examples
> >
> > ri Array
> > ri Array.sort
> > ri Hash#each
> > ri Math::sqrt
> >
> > But in each case I receive an error message of the form "Nothing known
> about xxx". Why is there no available info on these topics ?
> >
> > ==================
> >
> > Barry Kimelman
> >
> >       Virus-free. www.avast.com
> >
> > Unsubscribe: <mailto:[email protected]
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-- 
        Eric Christopherson


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