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nusco/around_alias.rb

Created August 18, 2010 13:45
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Spell: Around Alias
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around_alias.rb
# ===================
# Spell: Around Alias
# ===================
# Call the previous, aliased version of a method from a redefined method.
class String
alias :old_reverse :reverse
def reverse
"x#{old_reverse}x"
end
end
"abc".reverse # => "xcbax"
# For more information: http://www.pragprog.com/titles/ppmetr/metaprogramming-ruby
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