From: Tobias Reif <tobiasreif@...>
Date: 2001-09-02T02:45:04+09:00
Subject: [ruby-talk:20678] Re: RCR: non-bang equivalent to []=

Hi David,


>>[]= is bang;
>>so
>>a version of []= that doesn't modify the receiver
>>would be cool.
>>
> I'm sorry -- I don't understand.  What exactly is supposed to happen?
> 
>   a = [1,2,3,4]
>   a.non_bang_set(0) = 100
>   a                      # => [1,2,3,4]


Would the following make sense?
The exact syntax doesn't matter to me, i just would like to get a 
non-bang []=

Array#set_at

a = ["a", "b", "c"]
a.set_at 0,"x" -> ["x", "b", "c"]
a -> ["a", "b", "c"]

Array#set_at!

a = ["a", "b", "c"]
a.set_at! 0,"x" -> ["x", "b", "c"]
a -> ["x", "b", "c"]

Tobi

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Tobias Reif
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