Re: [Rails] How to remove a record if it is duplicate end sum values :val

I'm sorry if it made no sense to my sentence. The next will be clearer.

On Fri, Aug 3, 2012 at 9:14 AM, Colin Law <clanlaw@googlemail.com> wrote:

On 3 August 2012 13:00, Esmerino Jr <jose.esmerino@gmail.com> wrote:
> Michael Pavling, thanks for reply.
>
>  Okay, i agree that is a array of hash : list.class => Array end
> list.last.class => Hash.
>  But your solution only removes duplication and the sum of :val ?

I think you need to make it more clear what you are trying to achieve.
 The sentence " But your solution only removes duplication and the sum
of :val?" does not make sense.

Colin

>
> Tom Meinlschmid, thanks for reply.
>
> Not a test for job seekers :)
>
> Solution:
>
> list.inject(Hash.new(0)) { |hash, el| hash[el[:cod]] += el[:val] ; hash }
>
> On Fri, Aug 3, 2012 at 4:58 AM, Tom Meinlschmidt <tomas@meinlschmidt.com>
> wrote:
>>
>> saw something similar somewhere as a test for job seekers :)
>>
>> so don't know if someone will help you as it's not so hard to solve
>>
>> tom
>>
>> On Aug 1, 2012, at 15:25 , Esmerino Costa <hakagura@gmail.com> wrote:
>>
>> > I have a hash like so:
>> >
>> > list=[
>> >   {:cod => "0001", :name => "name1", :val => 10},
>> >   {:cod => "0001", :name => "name1", :val => 12},
>> >   {:cod => "0002", :name => "name2", :val => 13},
>> >   {:cod => "0002", :name => "name2", :val => 14},
>> >   {:cod => "0002", :name => "name2", :val => 14},
>> >   {:cod => "0004", :name => "name4", :val => 16},
>> >   {:cod => "0004", :name => "name4", :val => 16},
>> >   {:cod => "0004", :name => "name4", :val => 17},
>> >   {:cod => "0005", :name => "name5", :val => 17},
>> >   {:cod => "0005", :name => "name5", :val => 17},
>> >   {:cod => "0005", :name => "name5", :val => 17},
>> >   {:cod => "0006", :name => "name6", :val => 110},
>> >   {:cod => "0006", :name => "name6", :val => 10},
>> > ]
>> > What I would like to learn how to do is how to remove a record if it is
>> > duplicate end sum values :val.
>> >
>> >
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>> --
>>
>> ===============================================================================
>> Tomas Meinlschmidt, MS {MCT, MCP+I, MCSE, AER}, NetApp Filer/NetCache
>>
>> www.meinlschmidt.com  www.maxwellrender.cz  www.lightgems.cz
>>
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