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Contents
# Copyright (c) 2008 Michael Fellinger m.fellinger@gmail.com
# All files in this distribution are subject to the terms of the Ruby license.
# Extensions for Symbol
class Symbol
unless method_defined?(:to_proc)
# Turns the symbol into a simple proc, which is especially useful for enumerations. Examples:
#
# # The same as people.collect { |p| p.name }
# people.collect(&:name)
#
# # The same as people.select { |p| p.manager? }.collect { |p| p.salary }
# people.select(&:manager?).collect(&:salary)
#
# [1, 2, 3].map(&:to_s) # => ['1', '2', '3']
# %w[a b c].map(&:to_sym) # => [:a, :b, :c]
def to_proc
Proc.new{|*args| args.shift.__send__(self, *args) }
end
end
end
Version data entries
8 entries across 8 versions & 3 rubygems