970 5 Two ways to simplify Array blocks in Ruby two ways to simplify array blocks in ruby 2011-03-22 11:27:33 2011-03-29 20:12:56 1. If you have a block of the form {{{{ |v| v.mtd }}}}: {{{ ary.each { |v| v.mtd } # normal way ary.each(&:mtd) # simpler way # Example: ary = %w(abc def ghi jkl) ary.each(&:upcase!) # same as ary.each { |v| v.upcase! } }}} That works for other Array methods, like {{{map}}}. [http://en.wikibooks.org/wiki/Ruby_Programming/Syntax/Method_Calls#The_ampersand_.28.26.29 More on it.] 2. If you have a block of the form {{{{ |v| mtd v }}}}, //and// the method {{{mtd}}} does the same thing with all parameters: {{{ ary.each { |v| mtd v } # normal way mtd *ary # simpler way # Example: ary = %w(abc def ghi jkl) puts *ary # same as ary.each { |v| puts v } }}} See [http://theplana.wordpress.com/2007/03/03/ruby-idioms-the-splat-operator/ more on it.] (This same content was reproduced on [http://rubychallenger.blogspot.com/2011/03/two-ways-to-simplify-array-blocks-in.html my Ruby blog].) 1 0 0 0 0 language English 1 categ tips 1 categ articles 1