Create dynamic variable

ruby-talk
1

Hi !

is it possible in ruby to create dynamic variables like in php by doing
$b=$$a ??

i'd like to infer an instance variable from a layout view, in order to
set up dynamically a precise id to my html object (so i need the name
of the current objetc + its id)

Thanks in advance

nico

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2

This is usually an indication that you rather want a Hash.

Having said that here are a few other options you have:

OpenStruct
instance_variable_get/set
eval (not recommended)

Kind regards

  robert

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On 20.06.2008 00:51, nico Itkin wrote:

is it possible in ruby to create dynamic variables like in php by doing
$b=$$a ??

i'd like to infer an instance variable from a layout view, in order to
set up dynamically a precise id to my html object (so i need the name
of the current objetc + its id)

3

This was the way I dicovered arrays back when I was 11 years old. I
kept trying to concatenate a number with a fix variable name in some
version of basic.

Lucas.

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On Jun 20, 3:23 am, Robert Klemme <shortcut...@googlemail.com> wrote:

On 20.06.2008 00:51, nico Itkin wrote:

> is it possible in ruby to create dynamic variables like in php by doing
> $b=$$a ??

> i'd like to infer an instance variable from a layout view, in order to
> set up dynamically a precise id to my html object (so i need the name
> of the current objetc + its id)

This is usually an indication that you rather want a Hash.