Ruby on Rails

On 1 December 2011 20:57, Alexey Muranov <lists@ruby-forum.com> wrote:
> I tried to replace
>
> self.fixture_class_names = self.fixture_class_names.merge(class_names)
>
> with
>
> self.fixture_class_names.merge!(class_names) # Why does this fail?

At a guess, I'd say because "self.fixture_class_names=" is a method
that does some setting within it, while with the other syntax, you're
trying to call a bang method on the return value of a method.

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