I need to access a 2D array (matrix) a large number of times. What Qt class offers the fastest access 2D array for double? Is QVector a good choice or QLlinkedList? Speedwise, how do they measure up against C's "malloc" in terms of access speed?
I don't know the size of my matrix until the code starts to build it. So, it would be great if it could be built dynamically without predefining its dimensions.
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