[ruby-core:60976] [ruby-trunk - Feature #9548] Module curry

Issue #9548 has been updated by Boris Stitnicky.


@mame, I don't quite get these nuances between "currying" and "partial application". I could try and
learn them, but my approach is different here. I do not want to learn. I want to be stubborn like
Amazonians when first confronted with Bible. Pragmatically, partial application is all I need. And
since it's long, so let the word be `curry`. Whole point of using this hunger evoking word (Anglosaxon
surnames notwithstanding) is because it's short and unique, like "quark". And, a shameful secret,
my mnemonic for curry is, oh, it's like with food, there is something (mutton, chicken, veggies...),
and you can add different types of curry to it. And `#curry` decides about curry, and I then decide
about something. So it's "partial application". I suggest to cannibalize the theorists and settle
for this na誰ve interpretation of `curry`. (Just in case that I am really missing something here,
the theorists can go find a different word for that something after we steal `curry` from them and
use it for "partial application".)

@sam, see #7939 for my take on what `Proc#curry` should do.

----------------------------------------
Feature #9548: Module curry
https://bugs.ruby-lang.org/issues/9548#change-45379

* Author: Boris Stitnicky
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
I would like to beg for either `Module#curry` method with syntax

```ruby
module Foo
  curry( :sym2, :sym1, 0 => 42, 1 => 43, 3 => 44, foo: "bar" )
end
```

or `curry` directive similar to the existing `alias` directive

```ruby
module Foo
  curry sym2 sym1( 42, 43, *, 44, foo: "bar )
end
```

Example usage:

```ruby
module MyMath
  def power a, b
    a ** b
  end

  curry square power( *, 2 )
  curry square_root power( *, 0.5 )
  curry cube( *, 3 )
  curry pow2 power( 2, * )
  curry pow_e power( Math::E, * )
  curry pow10 power( 10, * )
end
```




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