Sha256: 44947da807df82c6dc89887e692d06b8d8b508761dbae57d7e524d04d039f4a2
Contents?: true
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Versions: 26
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Contents
class Module
private
# Creates a new method for a pre-existing method.
#
# If _aka_ is given, then the method being redefined will
# first be aliased to this name.
#
# class Greeter
# def hello ; "Hello" ; end
# end
#
# Greeter.new.hello #=> "Hello"
#
# class Greeter
# redefine_method( :hello, :hi ) do
# hi + ", friend!"
# end
# end
#
# Greeter.new.hello #=> "Hello, friend!"
#
def redefine_method( sym, aka=nil, &blk )
raise ArgumentError, "method does not exist" unless method_defined?( sym )
alias_method( aka, sym ) if aka
undef_method( sym )
define_method( sym, &blk )
end
end
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin test
require 'test/unit'
class TCModule < Test::Unit::TestCase
def fixture_method; "a"; end
redefine_method( :fixture_method ) { nil }
def test_redefine_method
assert_equal( nil, fixture_method )
end
end
=end
Version data entries
26 entries across 26 versions & 1 rubygems