Hi. > > [...] > >> + MathIllegalArgumentException should only be thrown in situations > >> + where preconditions can be exhaustively provided so that what > >> arguments > >> + are "illegal" can be specified fully to the caller. Domain-specific > >> + exceptions need to be defined for cases where failures cannot be > >> + attributed to parameter precondition violation. For example, the > >> exact > >> + domain of successful activation of a solver or quadrature method > >> may be > >> + impossible to specify because of numerical properties of the method. > >> + If a solver fails to find a root or a quadrature method fails to > >> converge > >> + for a given set of parameters, <i>unless those parameters violate > >> the > >> + advertised preconditions</i> it is not appropriate to throw > >> + MathIllegalArgumentException.</li> > > > > If the failure results from an exception thrown by user code (e.g. an > > exception is thrown while a solver is evaluating a user-defined function), > > the Commons Math code must let it propagate without interference. > > That may not be possible in general. > > If the user code generates an Exception that CM already handles, how > can CM distinguish this case?
In general, I think that such a code is going to create headaches. But let's discuss from a specific example. Do you have one? Regards, Gilles --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
