From: mame@...
Date: 2019-08-23T03:28:27+00:00
Subject: [ruby-core:94495] [Ruby master Feature#15955] UnboundMethod#apply

Issue #15955 has been updated by mame (Yusuke Endoh).


Here is a benchmark:

```
class Foo
  def foo
  end
end
meth = Foo.instance_method(:foo)
obj = Foo.new

10000000.times { meth.bind(obj).call } # 1.84 sec
10000000.times { meth.apply(obj)     } # 1.04 sec
```

----------------------------------------
Feature #15955: UnboundMethod#apply
https://bugs.ruby-lang.org/issues/15955#change-80930

* Author: nelhage (Nelson Elhage)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
I'd love a way to apply an UnboundMethod to a receiver and list of args without having to first `bind` it. I've ended up using `UnboundMethod`s in some hot paths in my application due to our metaprogramming idioms, and the allocation from `.bind` is comparatively expensive.

I'd love `unbound_method.apply(obj, args���)` to be equivalent to `unbound_method.bind(obj).call(args���)` but without allocating the intermediate `Method`



---Files--------------------------------
umethod_apply.patch (5.01 KB)


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