From: Robert Dober <robert.dober@...>
Date: 2008-04-18T16:36:38+09:00
Subject: Naming question

Hi list

I actually just need the following method there is no doubt about it;)
but the name which sprang into mind naturally  "partition_by"
has a serious shortcoming, it is not POLS in the sense that
Enumerable#partition returns an array and Enumerable#partition_by
returns a hash.

module Enumerable
  def partition_by &blk
    result = Hash.new {|h,k| h[k] = [] }
    each do | element |
      result[ element ] << blk.call element
    end
    result
  end
end


Any ideas for a nice different name?
Does Facet implement the above maybe?

A remark for  my fellow fans of inject, the same code with inject
somehow does not feel right, I do not like to use inject with this
pattern
inject(...){ |acc,ele|
     ...
     acc
}

Thanx in advance
Robert

-- 
http://ruby-smalltalk.blogspot.com/

---
Whereof one cannot speak, thereof one must be silent.
Ludwig Wittgenstein