How to create Multidimensional List in dart?. IN other languages we can use array for this But in dart we use List . SO i find in google I could not found method for Create Multidimensional List in dart ? Anyone Know create Multidimensional List in dart ?
1 Answer
There are multiple ways to accomplish that. The simplest solution is to create a list of lists like:
void main() {
// Create 5x5 list
List<List<int>> twoDimList = List.generate(5, (_) => List.filled(5, 0));
twoDimList[0][0] = 5;
print(twoDimList);
}
A more efficient way to do it is to use a single list and access it by using two coordinates like the following class I have used in a previous project:
class Grid<T> {
final int length, height;
final List<T> list;
Grid(this.length, this.height) : list = List(length * height);
T get(int x, int y) => list[_getPos(x, y)];
void set(int x, int y, T value) => list[_getPos(x, y)] = value;
int _getPos(int x, int y) => x + (y * length);
}
