[Interest] why does Qt prefer to return QList over QVector?

[Felix morack]

hello,


i recently gained a small, but considerable performance boost by switching
out QList for QVector in some legacy code. This is hindered by the fact
that Qt itself often returns QList, eg with QMap::values().


Is there a reason for this? Why arent QVectors used?


A somewhat related question, why is there no QList::reserve()? I guess i
see how that function might not make much sense from an algorithmic pov,
but shouldnt it at least be there as a NoOp to make it easy switching
between data structures?


best regards,
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