| Overthinking the problem, or another post where I forget the demographics of my readership. |
[Aug. 1st, 2008|02:45 pm]
Chaz Meyers
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I was writing some trivial yet repetitive error-handling code when it occurred to me it would be cool if ruby had a feature to define a method that didn't increase the call-stack, such that you could have a new scope but could also return or terminate directly from the calling function. Sort of like the following pseudo-code...
class A
attr_accessor :check_errors
def initialize
@check_errors = Proc.new do |something|
return something if something.kind_of? Exception
if something.respond_to? :each
bad = something.detect { |thing| thing.kind_of? Exception }
return bad if bad
end
end
end
end
class B < A
def maybe_erronous
# do stuff...
self.check_errors(questionable)
# do more stuff...
end
end
Except the code would actually work. If you define a Proc like that it raises a LocalJumpError exception.
Then I remembered I could just re-raise the exception and catch it in the calling code. Duh. |
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