From: Robert Dober <robert.dober@...>
Date: 2006-06-22T04:23:34+09:00
Subject: Re: The difference between s=s+”a” ans s<< ”a”

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On 6/21/06, Alan Moen <mapsetah2000-maillist5@yahoo.ca> wrote:
>
> Hi,
>
> I wonder what is the difference between s=3Ds+"a" ans s<< "a"?


s =3D s + "a"
(1) compute a new String object "s" + a
(2) set s as a reference to the newly created object

s<<"a"

(1) append "a" to the String object s refers to.

The latter is much faster and should be prefered when possible (it will not
be possible if s is frozen e.g.)

Cheers
Robert

Somebody told me that s<< "a" concatenates the string without mutation.
> Is that right?
>
> Thanks,
> Alan
>
> --
> Posted via http://www.ruby-forum.com/.
>
>


--=20
Deux choses sont infinies : l'univers et la b=EAtise humaine ; en ce qui
concerne l'univers, je n'en ai pas acquis la certitude absolue.

- Albert Einstein

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