From: Dave Aronson <rubytalk2dave@...>
Date: 2011-10-17T03:50:38+09:00
Subject: Re: What does this snippet mean?

On Fri, Oct 14, 2011 at 13:15, Junayeed Ahnaf Nirjhor
<zombiegenerator@aol.com> wrote:

> Here’s a code snippet. What it actually does?
>
> def rewind(f)
>  f.seek(0, IO::SEEK_SET)
> end

Jeremy already gave you that answer, but I'll help you find many more yourself.

When trying to figure out what something does, a great way to find out
is to Google together as many of the significant words as you can.  In
this case, if you Google seek and IO::SEEK_SET, the very first hit is
http://rubylearning.com/satishtalim/read_write_files.html which
explains all about reading and writing text files -- in Ruby.  If you
omit the IO part, you wind up first with hits about other languages --
but at least you would probably be able to figure out the general idea
of what Ruby's "seek" *probably* does.

(And even that's without including Ruby as a search term.  Googling
seek, SEEK_SET, *and Ruby*, gets you Satish's site again.)

Google-Fu is a very important skill to develop....

-Dave

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