MQL4 Reference 
Array functions ArrayResize
| int ArrayResize( |
void array[], int new_size) |
Sets a new size for the first dimension. If executed successfully, it returns count of all elements contained
in the array after resizing, otherwise, returns -1, and array is not resized.
Note: Array declared at a local level in a function and resized will remain unchanged after the function has completed its operation.
After the function has been recalled, such array will have a size differing from the declared one.
Parameters:
| array[] |
- |
Array to resize. |
| new_size |
- |
New size for the first dimension. |
Sample:
double array1[][4];
int element_count=ArrayResize(array1, 20);
// new size - 80 elements
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