```Issue #7939 has been updated by naruse (Yui NARUSE).

Category set to core
Status changed from Rejected to Assigned
Assignee set to matz (Yukihiro Matsumoto)
Target version set to next minor

> nobu
It can't be reason to reject this.
And describe the reason by English
----------------------------------------
Feature #7939: Alternative curry function creation
https://bugs.ruby-lang.org/issues/7939#change-36937

Author: drKreso (Kresimir Bojcic)
Status: Assigned
Priority: Normal
Assignee: matz (Yukihiro Matsumoto)
Category: core
Target version: next minor

=begin
I really like the new "(({assuming}))" method used for currying in Perl 6.

For example if I loose my mind and implement ((%fizzbuzz%)) via currying I can do it like this:

fb = ->(modulo_number, message, x) { message if x % modulo_number == 0 }
fizzbuzz = fb.curry[15,"FizzBuzz"]
fizz = fb.curry[3, "Fizz"]
buzz = fb.curry[5, "Buzz"]
(1..100).each { |i| puts fizzbuzz[i] || fizz[i] || buzz[i] || i }

Here the first hurdle is that curry is somewhat mathematical, and the secons is that you need to use (({[]})) for function invoking...
If we had something similar to this:

class Proc
def assuming(*args)
curry.call *args
end
end

It could be written more naturally IMO:

fb = ->(modulo_number, message, x) { message if x % modulo_number == 0 }
fizzbuzz = fb.assuming(15,"FizzBuzz")
buzz = fb.assuming(5, "Buzz")
fizz = fb.assuming(3,"Fizz")

(1..100).each { |i| puts fizzbuzz[i] || fizz[i] || buzz[i] || i }
=end

--
http://bugs.ruby-lang.org/

```