Ruby on Rails

On 3 September 2012 19:08, John Merlino <stoicism1@aol.com> wrote:
> The ActionView module is declared several times in the Rails source:
>
> rails/actionpack/lib/action_view/base.rb,rails/actionpack/lib/
> action_view/buffers.rb,rails/actionpack/lib/action_view/digestor.rb,
> rails/actionpack/lib/action_view/helpers/asset_tag_helpers/
> asset_paths.rb, and the list goes on and on.
>
> How is it able to be declared like this in multiple files without the
> previous definition of it being overwritten?

It is a basic feature of Ruby that you can re-open a class definition
and add or redefine methods.

Colin

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