chrisjpowers

// If console is not defined (ie the browser isn't 
// using developer extensions), this will keep console
// statements accidentally left in the code from
// causing errors for the end user.
//
if(console == null) {
  var console = {
    log: function() {
      // do nothing
    }

chrisjpowers

# Allows you to declare an alias_method_chain before the original 
# method has been defined.
#
#   class A
#     delayed_method_chain :name, :hello
#       
#     def name_with_hello
#       "Hello #{name_without_hello}"
#     end
#     

chrisjpowers

class Hash
  def map_values
    h = {}; self.each_pair { |k,v| h[k] = yield(v) }; h
  end
end

[ 'asdf', 'qwer' ].map{ |val| val * 2 }
  # => [ 'asdfasdf', 'qwerqwer' ]

{ :one => 'asdf', :two => 'qwer' }.map{ |val| val * 2 }