A Comparison of Dynamic 3d Array Instantiation in Selected Languages

matrix = [[[0 for _ in range(l)] for _ in range(m)] for _ in range(n)]

int[][][] matrix = new int[n][m][l];

matrix = replicate n (replicate m (replicate l 0))

let matrix = Array.init n (fun _ -> Array.init m (fun _ -> Array.make l 0))

#include <vector>

std::vector<std::vector<std::vector<int>>> matrix(n,
	std::vector<std::vector<int>>(m,
		std::vector<int>(l)));

#include <stdlib.h>

int (*matrix)[m][l] = malloc(sizeof(int[n][m][l]));

#include <stdlib.h>

int ***matrix;
int i, j;

matrix = malloc(n * sizeof(int **));
for (i = 0; i < n; i++) {
    matrix[i] = malloc(m * sizeof(int *));
    for (j = 0; j < m; j++) {
        matrix[i][j] = calloc(l, sizeof(int));
    }
}