[ruby-core:79036] [Ruby trunk Feature#13118] Array#at(*indexes); Array#at([indexes])

Issue #13118 has been reported by Chad Brewbaker.

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Feature #13118: Array#at(*indexes);  Array#at([indexes])
https://bugs.ruby-lang.org/issues/13118

* Author: Chad Brewbaker
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
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It is useful to have Array return a repeated permutation. Rather than add another method, we could overload Array#at to take multiple indexes.

~~~ruby
a = [ "a", "b", "c", "d", "e" ]
a.at(0)     #=> "a"
a.at(-1)    #=> "e"
#New stuff
a.at(0,1) #=> ["a", "b"]
a.at(0,0) #=> ["a", "a")
a.at([2,3]) #=> ["c", "d"]
a.at([-1,1]) #=> ["e", "b"]
~~~



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