Let's start with wtf!? - (m.onkey.org)

WAT

Let's start with wtf!? Published almost 5 years ago UPDATE : Check Ticket 8818 Welcome to my new blog :) Now over to rails.. So you’ve been told about using cute shortcuts for enumerator like Post.find(:all).map(&:title) – you feel great using it, don’t you ?? And you laughed at those who didn’t understand how &:sym worked and continued to use .map ( |shit| shit.stupid } syntaxt! You were made feel geeky indirectly. I was there :-) But those days are “over” and it’s time to go back home! I’d let benchmark speak for me.. require ' benchmark ' class Symbol def to_proc Proc .new { |*args| args.shift.__send__(self , *args) } end end n = 10000 s = Struct .new :id messages = [] n.times { messages << s.new(:id => rand(n)) } Benchmark .bm do |x| # Integer x.report { n.times { messages.map{|m| m.id} } } x.report { n.times { messages.map(&:id ) } } end # $ ruby perform.rb # user sys...

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