From: sto.mar@...
Date: 2013-07-06T04:37:54+09:00
Subject: Re: what is Vector#map2 ?

Am 05.07.2013 20:59, schrieb Mike Stok:
>
> On 2013-07-05, at 2:49 PM, sto.mar@web.de wrote:
>
>> Am 05.07.2013 20:25, schrieb Love U Ruby:
>>> Hi,
>>>
>>> Can anyone give me one example to understand the functionality of
>>> Vector#map2(http://yard.ruby-doc.org/stdlib-2.0/Vector.html#collect2-instance_method).
>>> I understand the Vector#map.
>>>
>>> require 'matrix'
>>>
>>> a = [1, 2, 3, 4]
>>> m = Vector[*a] # => Vector[1, 2, 3, 4]
>>> m.map{|i| i * i } # => Vector[1, 4, 9, 16]
>>
>> Shouldn't be too difficult to find out by looking at the source,
>> but anyway:
>>
[...]
>
> With pry (and pry-plus) it is easy to get to the source and docs for a method:

The source is even included in the docs linked to by the OP...

Regards,
Marcus


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