I’ve always been in two minds about the Symbol#to_proc hack, it’s
clever but adds a bit of line noise. Then I figured you can turn it
around:
class String
def everything_in(e)
e.map { |u| u.send(self) }
end
end
“upcase”.everything_in %w( i am an array )
=> [“I”, “AM”, “AN”, “ARRAY”]
It’s a bit nasty because in 1.8 it can call private methods, but I
kinda like it. And it’s not much use if you want to pass arguments
either.
Not sure if it’s been done before either.
Ashley