currying an instance method

foo.rb

class Foo
  def foo(x)
    "foo! #{x}"
  end

  def bar
    # my imaginary syntax for "create functional reference from method foo with argument bar.
    &(:foo, 5)
  end
end

# Foo.new.bar.call
#  => "foo! 5"

Just return a lambda?

class Foo
  def foo x
    "foo! #{x}"
  end

  def bar
    -> { foo 5 }
  end
end

Foo.new.bar.call

ah yeah I thought lambda's didn't keep scope, but they do. Is it procs that don't keep scope? Or you you have to manually bind to change scope?

Thanks.

closures always keep their scope?! but you can "ignore" their original binding and evaluate them in a different context if you like.