Integer Array. Integer Array. Contains integers. Optimized for memory usage, can't fragment the memory. Create from a generic array. Append an element at the end of the array (alias of [method push_back]). Append an [PoolIntArray] at the end of this array. Insert a new int at a given position in the array. The position must be valid, or at the end of the array (pos==size()). Reverse the order of the elements in the array (so first element will now be the last). Append a value to the array. Remove an element from the array by index. Set the size of the array. If the array is grown reserve elements at the end of the array. If the array is shrunk truncate the array to the new size. Change the int at the given index. Return the array size.