Ruby Issue Tracking System

08/31/2017

01:02 PM Ruby Feature #13784: Add Enumerable#filter as an alias of Enumerable#select

matz (Yukihiro Matsumoto) wrote:
> Sounds OK. One concern left is `Hash#filter`.
> ...
I have added a bug to discuss the discrepancy in Hash's behavior: https://bugs.ruby-lang.org/issues/13795 davidarnold (David Arnold)

08/26/2017

02:26 AM Ruby Feature #13801: Implement case equality test for Set#===

> I expect Set to act almost like Array [...]
But why? Aside from both being collections, there is no connection. Ruby's Set isn't even implemented with an Array.
The core mathematical definition of Set is based on element member... davidarnold (David Arnold)

08/12/2017

04:03 PM Ruby Feature #13795: Hash#select return type does not match Hash#find_all

> In the worst case, ruby 3.x may accept backwards-incompatible changes so either way
> ...
I fully agree that changing Hash#select and #reject (or even #find_all) should not be a 2.x change! davidarnold (David Arnold)

04:00 PM Ruby Feature #13795: Hash#select return type does not match Hash#find_all

> > Also, as a side note, it seems that Hash#select and #reject really are the only two methods that behave this way. And even inside Hash, methods like #collect, #collect_concat, #drop, #drop_while, #grep, #max, #max_by, #min, #min_by... davidarnold (David Arnold)

08/11/2017

04:21 AM Ruby Feature #13801: Implement case equality test for Set#===

Created pull request: https://github.com/ruby/ruby/pull/1673 davidarnold (David Arnold)

08/10/2017

09:41 PM Ruby Misc #13804 (Open): Protected methods cannot be overridden

In Ruby, the main reason you would use protected instead of private is because you want different instances of the same class lineage to be able to access the method.
However, the rules around protected (callable only where self of th... davidarnold (David Arnold)

08:23 PM Ruby Feature #13801 (Closed): Implement case equality test for Set#===

In keeping with other class semantics, Set should implement an inclusion / membership test for #===.
For example with Range:
~~~ ruby
(1..3) === 2 #=> true
~~~
Desired behavior:
~~~ ruby
Set[1, 2, 3] === 2 #=> true
~~~
... davidarnold (David Arnold)

04:12 PM Ruby Feature #13795: Hash#select return type does not match Hash#find_all

I did some research to explore the idea that *more* Enumerable classes should implement #select (and even #collect, #drop, etc) to return their own type, since that sounds appealing on the surface.
While classes like Array, Hash, and ... davidarnold (David Arnold)

08/09/2017

08:37 PM Ruby Feature #13795: Hash#select return type does not match Hash#find_all

> I would like to suggest a third possible option: if Hash#select returning a Hash is useful, why not expand on this so that one of them always returns the input data structure?
So, I think people do like having a way to get the same ... davidarnold (David Arnold)

05:47 PM Ruby Feature #13795: Hash#select return type does not match Hash#find_all

> This might make the next version of Ruby not backwards-compatible in some instances. It might be better to leave the methods as they are.
Ruby has been not backwards-compatible in several releases, so I don't see that as a reason pe... davidarnold (David Arnold)