From: Erik Veenstra <erikveen@...>
Date: 2006-08-26T15:30:54+09:00
Subject: Re: map and join or inject?

----------------------------------------------------------------

 $ vi test.rb ; cat test.rb
 GC.disable

 1000.times do
   (1..1000).map{|s| s.to_s}.join("")
   #(1..1000).inject(""){|r, s| s.to_s; r}
 end

 count   = 0
 ObjectSpace.each_object do
   count += 1
 end
 p count

 $ ruby test.rb
 1003392

----------------------------------------------------------------

 $ vi test.rb ; cat test.rb
 GC.disable

 1000.times do
   #(1..1000).map{|s| s.to_s}.join("")
   (1..1000).inject(""){|r, s| s.to_s; r}
 end

 count   = 0
 ObjectSpace.each_object do
   count += 1
 end
 p count

 $ ruby test.rb
 2001392

----------------------------------------------------------------

gegroet,
Erik V. - http://www.erikveen.dds.nl/