Kotlin has it, too. It's a nice featu= re. In a pet language of mine, I added the=C2=A0index=C2=A0as an "impl= icit" argument, too. Something like this:

elements=C2=A0 =3D ["foo", "bar", "baz&qu= ot;]

elements.each=C2=A0{

=C2=A0 puts "Element at = index #{idx} has value #{it}."

}

&q= uot;Element at index 0 has value foo."

"Element at inde= x 1 has value bar."

etc....

I t= hink it would be handy to have that in Ruby.

~ Ale= Miralles.

http://amiralles.c= om.ar

On Thu, Feb 7, 2019 at 4:36 AM= <matz@ruby-lang.org> wrote= :

Issue #4475 ha= s been updated by matz (Yukihiro Matsumoto).

I still feel weird when I see `@` and `@1` etc. Maybe I will get used to it= after a while.
I need time.

Matz.

----------------------------------------
Feature #4475: default variable name for parameter
https://bugs.ruby-lang.org/issues/4475#change-767= 18

* Author: jordi (jordi polo)
* Status: Assigned
* Priority: Normal
* Assignee: matz (Yukihiro Matsumoto)
* Target version:
----------------------------------------
=3Dbegin

There is a very common pattern in Ruby:

=C2=A0object.method do |variable_name|
=C2=A0 variable_name doing something=C2=A0
=C2=A0end

=C2=A0Many times in fact the name of the object is so self explanatory that= we don't care about the name of the variable of the block. It is commo= n to see things like :

=C2=A0@my_sons.each { |s| s.sell_to_someone }

or

=C2=A0Account.all.each { |a|=C2=A0 my_account << a.money }

=C2=A0People tend to choose s or a because we have the class or the object = name just there to remind you about the context.

I would like to know if can be a good idea to have a default name for that = parameter. I think it is Groovy that does something like:

=C2=A0 Account.all.each { my_account << it.money }

Where it is automagically filled and it doesn't need to be declared.=C2= =A0

I think it is as readable or more (for newbies who don't know what is |= |) and we save some typing :)

=3Dend

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