From: Graham Foster <graham@...>
Date: 2004-09-24T04:09:32+09:00
Subject: Re: Newbie: Case statement

> Yup, you can use this as a case that checks all options:
> 
> def greedy_case(obj, cases)
>    cases.find_all do |condition, action|
>      condition === obj
>    end.inject(Hash.new) do |hash, (condition, action)|
>      hash[condition] = action.call; hash
>    end
> end

OK - Does this do the following (roughly)
- passes the input variable (x) and a hash of ranges and pointers to 
functions (C speak)
- No idea what end.inject means, but the effect is to iterate through 
the hash of "ranges" (or presumably eny condition), and for each 
match (determined by === must look this up) execute the inline 
function (block). 
- What is the last hash for?
Roughly right?
What a devious mind you have Florian.
Graham