From: Guten <ywzhaifei@...>
Date: 2010-09-12T11:25:43+09:00
Subject: Re: .each skipping elements

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a = ["About us", "Blog", "Status", "Help", "TOS", "Privacy", "Are we missing
an area?"]

a.delete_if{|link| link =~ /(Blog|About Us|Status|Help|TOS|Privacy|Are we
missing an area\?)/ }

p a    # return ["About us"]

it works. maybe you need try {|link| link.text=~/../}




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On Sun, Sep 12, 2010 at 7:51 AM, David A. Black <dblack@rubypal.com> wrote:

> Hi --
>
> On Sun, 12 Sep 2010, Cameron Vessey wrote:
>
>  Thanks for the reply and I think I get it now
>>
>> if we delete element 50
>> element 51 gets sloted into 50
>> then the pointer moves to 51 never addressing the original 51..ok
>>
>> page.links.delete_if{|link| link =~ /(Blog|About
>> Us|Status|Help|TOS|Privacy|Are we missing an area?)/
>>
>
> (Note that the ? in that regex is a special character and will not match
> an actual question mark. It's a zero-or-one quantifier, operating on the
> "a" character before it.)
>
>
>   }
>>
>> I tried it .. it runs... no errors... It loops threw all the link
>> elements.. but never does any thing.. nothing gets deleted
>>
>>
>> I see how it should work ...but it doesn't
>>
>
> Do you need to make it case insensitive? It definitely works:
>
> $ cat del.rb array = ["Keep1", "Blog", "Status", "Keep2", "TOS", "Help",
> "Keep3"]
> array.delete_if {|word| word =~ /Blog|Status|TOS|Help/ }
> p array
>
> $ ruby del.rb ["Keep1", "Keep2", "Keep3"]
>
> so something else must be going on.
>
>
>
> David
>
> --
> David A. Black, Senior Developer, Cyrus Innovation Inc.
>
>  The                   Ruby training with Black/Brown/McAnally
>  Compleat              Philadelphia, PA, October 1-2, 2010
>  Rubyist               http://www.compleatrubyist.com
>
>

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