From: dblack@...
Date: 2006-11-29T05:38:32+09:00
Subject: Re: << == push?

Hi --

On Wed, 29 Nov 2006, ara.t.howard@noaa.gov wrote:

> On Wed, 29 Nov 2006 dblack@wobblini.net wrote:
>
>> Hi --
>> 
>> On Wed, 29 Nov 2006, Giles Bowkett wrote:
>> 
>>> I was just prepping a code sample for somebody out in the big wide
>>> world, and doing that always makes me review my code, and I noticed I
>>> was using Array#push a lot instead of << (I think that's Array#<<
>>> actually?).
>>> 
>>> So, kind of a basic question, is << basically just idiomatic Ruby for
>>> push? (This was a Rails project with a lot of custom JavaScript and I
>>> think I just got in that particular mindset.)
>> 
>> I *think* the only difference is that push can take more than one
>> argument.
>
> also
>
>  << : generally returns self to allow chaining
>
>  push : generally returns the elements pushed

I'm not seeing that:

irb(main):003:0> [1,2,3].push(4,5)
=> [1, 2, 3, 4, 5]
irb(main):004:0> [1,2,3] << 4
=> [1, 2, 3, 4]


David

-- 
                   David A. Black | dblack@wobblini.net
Author of "Ruby for Rails"   [1] | Ruby/Rails training & consultancy [3]
DABlog (DAB's Weblog)        [2] | Co-director, Ruby Central, Inc.   [4]
[1] http://www.manning.com/black | [3] http://www.rubypowerandlight.com
[2] http://dablog.rubypal.com    | [4] http://www.rubycentral.org