Remove a record if it is duplicate end sum values

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.

On Wed, Aug 1, 2012 at 8:35 PM, Esmerino Jr [email protected]
wrote:

{: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.

try

list.uniq

kind regards -botp

Thanks for replay, but this solution only remove the duplication of
values
and sum of values duplication?

Thanks again.

On Fri, Aug 3, 2012 at 7:33 PM, Esmerino Jr [email protected]
wrote:

Thanks for replay, but this solution only remove the duplication of values
and sum of values duplication?

pls show what output you really want.

Botp, thanks for replay, this is solution:

list.inject(Hash.new(0)) { |hash, el| hash[el[:cod]] += el[:val] ; hash
}

I want it out:

{“0006”=>120, “0005”=>17, “0004”=>33, “0002”=>27, “0001”=>22}

Thanks for replay again.

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