[#86755] [Ruby trunk Feature#14723] [WIP] sleepy GC — normalperson@...
Issue #14723 has been reported by normalperson (Eric Wong).
6 messages
2018/04/29
[ruby-core:86687] [Ruby trunk Feature#14701] If the object is not frozen, I want to be able to redefine the compound assignment operator.
From:
nobu@...
Date:
2018-04-26 03:58:39 UTC
List:
ruby-core #86687
Issue #14701 has been updated by nobu (Nobuyoshi Nakada).
What about
```ruby
na = Numo::Int32[5, 6]
a = na.inplace
a += 1
```
----------------------------------------
Feature #14701: If the object is not frozen, I want to be able to redefine the compound assignment operator.
https://bugs.ruby-lang.org/issues/14701#change-71647
* Author: naitoh (Jun NAITOH)
* Status: Rejected
* Priority: Normal
* Assignee:
* Target version:
----------------------------------------
If the object is not frozen, I want to be able to redefine the compound assignment operator (e.g. +=, -=, *=, /=, ..etc ).
https://docs.ruby-lang.org/ja/latest/doc/spec=2foperator.html
* Redefinable operator (method)
~~~
| ^ & <=> == === =~ > >= < <= << >>
+ - * / % ** ~ +@ -@ [] []= ` ! != !~
~~~
* use case
~~~
> require 'numo/narray'
> a = Numo::Int32[5, 6]
=> Numo::Int32#shape=[2]
[5, 6]
> a.object_id
=> 70326927544920
> a += 1
=> Numo::Int32#shape=[2]
[6, 7]
> a.object_id
=> 70326927530540
> a.inplace + 1
=> Numo::Int32(view)#shape=[2]
[7, 8]
> a.object_id
=> 70326927530540
~~~
With Numo::NArray, using "inplace" instead of "+=" will update the same object so it will be faster.
I want to write "a += 1" instead of "a.inplace + 1".
However, Ruby can not redefine "+=".
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