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From "Luc Maisonobe (JIRA)" <>
Subject [jira] Commented: (MATH-440) Introducing a "UserException" class
Date Sun, 14 Nov 2010 22:07:15 GMT


Luc Maisonobe commented on MATH-440:

Looking more precisely, it is not possible to have both a one pattern and a two patterns constructors
since they are followed by variable arguments (that would be ambiguous).
So I would rather have only a two patterns argument (either or both can be null) to let the
user tune his message at will.

> Introducing a "UserException" class
> -----------------------------------
>                 Key: MATH-440
>                 URL:
>             Project: Commons Math
>          Issue Type: Improvement
>            Reporter: Gilles
>            Assignee: Gilles
>            Priority: Minor
>             Fix For: 2.2
> After a discussion in MATH-425, it was concluded that a new "UserException" could be
created and advertised as a privileged channel to convey failure information through the CM
code layer.
> The usage of this exception is the same as the one intended for the current {{FunctionEvaluationException}},
{{MatrixVisitorException}} and {{DerivativeException}}, so those classes will be deprecated.

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