From: Michael Fellinger <m.fellinger@...>
Date: 2007-01-22T02:31:25+09:00
Subject: Re: [QUIZ] Method Auto Completion (#110)

On 1/19/07, Ruby Quiz <james@grayproductions.net> wrote:
> The three rules of Ruby Quiz:
>
> 1.  Please do not post any solutions or spoiler discussion for this quiz until
> 48 hours have passed from the time on this message.
>
> 2.  Support Ruby Quiz by submitting ideas as often as you can:
>
> http://www.rubyquiz.com/
>
> 3.  Enjoy!
>
> Suggestion:  A [QUIZ] in the subject of emails about the problem helps everyone
> on Ruby Talk follow the discussion.  Please reply to the original quiz message,
> if you can.
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> by Robert Dober
>
> Command Line Interfaces very often support command abbreviations The purpose of
> this quiz is to automatically dispatch to methods on unambiguous abbreviations,
> ask the user for clarification in case of ambiguous abbreviations and raise a
> NoMethodError in case of an abbreviation that cannot be matched to any command.
>
> Behavior of other methods defined in a class shall not be altered.
>
> Be creative about the interface and about behavior. I have OTOH defined a small
> test suite that makes assumptions about the interface and behavior. But the test
> suite is only there for your convenience.
>
> What is said below applies to the test suite and shall in no way inhibit any
> alternative ideas.
>
>         class Mine
>           abbrev :step, :next, :stop
>           abbrev :exit
>         end
>
>         Mine.new.e  # should resolve to exit
>         Mine.new.st # should prompt the user
>         Mine.new.a  # should still raise a NoMethodError
>
> Abbreviation targets themselves are not expanded.
>
>         class Nine
>           abbrev  :hash
>           abbrev  :has
>         end
>
>         Nine.new.ha  # => [:hash, :has]
>         Nine.new.has # => NoMethodError
>
>         class Nine
>           def has; 42; end
>         end
>         Nine.new.has # => 42
>
> In order to allow for automated testing the test code shall not prompt the user
> in case of an ambiguous abbreviation but return an array containing all (and
> only all) possible completions as symbols. Note that the test suite sets the
> global variable $TESTING to a true value for your convenience.
>
>         http://rubyquiz.com/test-abbrev.rb
>
>

My Solution doesn't pass all tests, since i think that when a method
:aa is defined it should offer completion from :a to :aa (even when
the method doesn't exist in the first place but is defined later on)

http://pastie.caboo.se/34631

It's nothing fancy, just a quick 15 minutes-hack, was fun though :)

^manveru