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@adelcambre
Last active May 17, 2017 00:06
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Module.new do
def prepend(m=nil, &blk)
if block_given?
super(Module.new(&blk))
else
super
end
end
end.tap { |pre| Module.prepend pre }
class Foo
def bar
puts "class"
end
end
Foo.prepend do
def bar
puts "prepended"
super
end
end
module Bar
def bar
puts "module"
super
end
end
Foo.prepend Bar
Foo.new.bar # => module
# prepended
# class
@rwz
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rwz commented May 16, 2017

There's no need to explicitly pass arguments to super on line 6. Just calling super with no parens passes all original arguments by default because Ruby is all about consistency.

Edit: Sorry, I meant line 6.

@adelcambre
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@rwz Fixed.

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