From: Trans <transfire@...>
Date: 2006-08-29T11:25:06+09:00
Subject: Re: Should Array.new(n, obj) be deprecated?


Just Another Victim of the Ambient Morality wrote:
> "Jason Merrill" <jason.merrill@yale.edu> wrote in message
> news:141745d50608281759k3d61288ex3b0f8b5768ff6840@mail.gmail.com...
> > It seems well known that the Array constructor form
> >
> > Array.new(n, obj)
> >
> > causes a common gotcha for programmers new to ruby (see * below for
> > details).  My question: is there ever any reason to use this form in
> > favor of
> >
> > Array.new(n) {block}
>
>     From what I've been told, there are performance trade-offs.  The former
> is faster than the latter so there are times when it's it's preferable if
> it does the job. Otherwise, no, there's no other reason that I can tell...
>     Does that mean we should deprecate it?  I think the pros out weigh the
> cons so I don't think so...

What wrong with

  [obj] * n

T.