On Tuesday, 17 de May de 2011 12:38:53 Stephen Bryant wrote: > > I agree there, though there are things to considder. Like, what would > > you > > return from a method like QList::indexOf()? > > Ummm.. std::out_of_range?
That would be an exception, which we've already agreed we're not going to do.
And it would be source-incompatible, which is against the goals of Qt 5.
Breaking source compatibility must be done for good reasons. And doing it in
the container classes must be LAST RESORT. There's just too much code using
them and changing compatibility there would introduce subtle and hard-to-track
errors.
> The question is, why are we using a size variable for error reporting?
Because, in addition to not using exceptions, we also disagree on what
exceptions should be used for. Exceptions are to be used for exceptional
cases.
For a function whose objective is to find the index of an element which may not
be there, the element not being there is not exceptional.
--
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
Senior Product Manager - Nokia, Qt Development Frameworks
PGP/GPG: 0x6EF45358; fingerprint:
E067 918B B660 DBD1 105C 966C 33F5 F005 6EF4 5358
signature.asc
Description: This is a digitally signed message part.
_______________________________________________ Qt5-feedback mailing list [email protected] http://lists.qt.nokia.com/mailman/listinfo/qt5-feedback
