Hi --

On Thu, 23 Nov 2006, William James wrote:

>
> Li Chen wrote:
>> Hi all,
>>
>> I want to build a new array from an old one with every element being
>> duplicated except the first and last element. And here are my codes. I
>> wonder if this is a real Ruby way to do it.
>
>>> array=[1,2,3,4,5,6,7,8,9,10]
> => [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>>> array.zip(array).flatten[1..-2]
> => [1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10]

I *still* don't feel comfortable with that one :-)  The flatten
thing is just too fragile.


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