From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2013-06-25T16:50:28+09:00
Subject: Re: Sum method through while loops or iteration

On Tue, Jun 25, 2013 at 9:44 AM, Hans Mackowiak <lists@ruby-forum.com> wrote:
> "Jesús Gabriel y Galán" <jgabrielygalan@gmail.com> wrote in post
> #1113505:
>
>> 2.- More functional styles:
>>
>> 2.0.0p195 :029 > a.inject(0) {|total, x| total + x}
>>  => 10
>> 2.0.0p195 :030 > a.inject(:+)
>>  => 10
>>
>
> there is a difference:
>
> [].inject(0) {|total, x| total + x}
>   => 0
> [].inject(:+)
>  => nil

Good catch !

Jesus.