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21-Jan-2018 14:26

If you are unfamiliar with the STL, or prefer to do things the "Qt way", you can use these classes instead of the STL classes.The container classes are implicitly shared, they are reentrant, and they are optimized for speed, low memory consumption, and minimal inline code expansion, resulting in smaller executables.QStack and QQueue are convenience classes that provide LIFO and FIFO semantics.Qt also provides these associative containers: QMap, QMulti Map, QHash, QMulti Hash, and QSet.

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If the container is modified, should new elements also be iterated?

The Java-style iterators are easier to use and provide high-level functionality, whereas the STL-style iterators are slightly more efficient and can be used together with Qt's and STL's generic algorithms.

Qt also offers a foreach keyword that make it very easy to iterate over all the items stored in a container.

For example, if you need a resizable array of QStrings, use QVector.

These container classes are designed to be lighter, safer, and easier to use than the STL containers.Other than for C it’s about the level understanding I have for all languages.



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