From: Robert Feldt <feldt@...>
Date: 2001-11-17T11:25:23+09:00
Subject: [ruby-talk:25693] Re: Arrays, iterators, and map/collect

On Sat, 17 Nov 2001, David Alan Black wrote:

> I think the map! version is pretty clear, since that's what
> map! basically does -- though I have to say, sometimes it
> looks/feels better to me to do:
> 
>    strings = strings.map { ... }
> 
> (though I don't know if there are performance considerations).
> 
There are since this version creates a new Array and
assigns to it. If it matters in practice is different question...
However, if you've decided that performance is an issue a general
performance tuning rule is to use bang methods if possible.

Regards,

/Robert