How to store a large number of elements in an array?

Question

Qt

Tell me how to store data, the amount of which exceeds the maximum value of the int type? Don't use index...

Answer 1

If I'm not mistaken, size_t is used as an array index, which corresponds to the maximum memory size for a processor with a given bit depth. That is, the situation you describe cannot happen in principle.
en.cppreference.com/w/cpp/types/size_t

Answer 2

Instead of a thousand words.

Answer 3

For the index, use the long type,
and for storage, use several arrays of the maximum size and, depending on the value of the index, calculate the real index of the desired array

Answer 4

with respect to any language, you can build a structure in which there will be an array of references to other arrays and the GetValue function with any type as a parameter, then determine in which array this element lies, for example, as a result of dividing the parameter by the maximum number of elements in the array, the remainder of this division will be the number of the element in the array. But in fact, the need for such a large array indicates the incorrectness of the application architecture, the task itself needs to be reconsidered.

Answer 5

Thanks for answers!

Answer 6

How are you going to work with such data sizes at all? Here it is already necessary to dig in the direction of displaying files in memory.