Is there some way to do this in Ruby?:
add = lambda { |x, y| x + y }
add_m = add.to_method
add_m(3, 4)
add = lambda { |x, y| x + y }
define_singleton_method(:add_m,&add)
p add_m(3,4)
#=> 7
Note, however, that you can call a lambda like a method, but with square brackets:
add = lambda { |x, y| x + y }
p add[3,4]
#=> 7
Don't think you can get exactly that, partly because there is no easy way to get the name of the variable/symbol you are binding to.
The nearest match IMHO:
class Proc
def to_method(m)
p=self
Object.class_eval {define_method(m, &p)}
end;
end
add = lambda { |x, y| x + y }
add.to_method(:add_m)
add_m(3, 4)
If it's not the Object you want to add the method to, you should pass in the class too.
If syntax doesn't matter too much, you can go with the Phrogz' suggestion: add[3,4],
or just
add.call(3,4)
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