c++ - Size method of QVector and std::vector -


the size method of qvector of type int, same method in std::vector unsigned. why difference. isn't unsigned type right way hold size, since can't negative?

because they discussed in 1999 , got conclusion int better choice, since number of functions returning uint relatively small , displeased warnings:

subject: re: killing uint return type in qt. from: alex sandro queiroz e silva <asandro@xxxxxxxxxxxxx> date: wed, 17 mar 1999 15:29:37 -0300 (est) cc: qt-interest@xxxxxxxx to: arnt gulbrandsen <arnt@xxxxxxxx>

on 17 mar 1999, arnt gulbrandsen wrote:

about 0.15% of functions in qt return uint. of called qmumble::size() or qmumble::count(). these functions never need return negative number, really, uint right type them return.

but it's nuisance, me @ least. keep comparing them ints, putting them in variables -can- contain negative numbers, , on. i've written

 if ( blah->count() < )

and gotten compiler warning many times already.

so considering changing return type these functions int in qt 2.0. think? you're users - want correctness , total backward compatibility or prefer more convenience?

--arnt

i think time convenience better, kind of results may methos, so...

-- alex asandro@lcg.dc.ufc.br


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