From: RichardOnRails <RichardDummyMailbox58407@...>
Date: 2011-05-28T14:25:24+09:00
Subject: Problem in using %:whatever in enumumerations

Hi,

I'm on  a Ruby self-improvement mission.  Presently I working my way
though all 47 of the Enumerable methods in Ruby 1.9.2.  I composed the
following:

greek = %w{Alpha Beta Gamma}
puts greek.all? { |s| s.length == 5 }		#  (correct)  => false
puts greek.all? { |s| (4..5).include? s.length }	#  (correct)  => true
puts greek.all?(&:length)			#  (programmer error)     => true

The last line is programmed incorrectly because I couldn't stick in
the intended "5" in a syntactically correct way.  Is the most
effective way construction of a lamda/proc? If so, how?

Thanks in advance,
Richard: