From: Vicente Bosch <vbosch@...>
Date: 2010-04-26T03:08:44+09:00
Subject: Re: Metaprogramming - Array initialization

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Hi Joel,

You could construct the string that represents the command that would
generate the multidimensional array creation and lauch it with
instance_eval.

def make_array(input)

result = ""

for i in input
     result = result + "Array.new(#{i},"
end

for i in input
     result = result + ")"
end

instance_eval(result)

end

The code is not very bright (and also a lot of checks on the input values
should be made before executing instance eval) but I hope you get an idea.

Regards,
Vicente

On 24 April 2010 23:13, Paul A. <cyril.staff@gmail.com> wrote:

> Hi,
>
> In Ruby, we can declare array as explain in the doc:
> http://ruby-doc.org/core/classes/Array.html#M002150
>
> That makes possible many kind of use, such as:
> >> Array.new(1, Array.new(3, Array.new(2, Array.new(1))))
> => [[[[nil], [nil]], [[nil], [nil]], [[nil], [nil]]]]
>
> For my needs, I would like to use a code that declare an array of any
> arrays that we want. I don't know if it is possible.
>
> If the previous example can be generated using a function like:
> my_array = make_array(1, 3, 2, 1)
>
> ...this could be awesome!
>
> Thank you for any comments and help.
>
> Regards.
>  --
> Posted via http://www.ruby-forum.com/.
>
>

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