[Development] QList for Qt 6

Konstantin Tokarev annulen at yandex.ru
Wed May 22 20:14:30 CEST 2019



22.05.2019, 21:10, "Giuseppe D'Angelo via Development" <development at qt-project.org>:
> Il 22/05/19 18:32, Konstantin Tokarev ha scritto:
>>>  What about fast prepend in that case? People tend to use QList as a deque because of the fast prepend/take first
>>  FWIW, std::deque is implemented as a peculiar data strucutre which is not really contiguous, and it may perform worse than QList in certain cases
>
> [citation needed], as usual.

https://en.cppreference.com/w/cpp/container/deque

"As opposed to std::vector, the elements of a deque are not stored contiguously: typical implementations use a sequence of individually allocated fixed-size arrays, with additional bookkeeping, which means indexed access to deque must perform two pointer dereferences, compared to vector's indexed access which performs only one."

-- 
Regards,
Konstantin



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