We can write an object in JavaScript as
obj1 = {1:2,2:2,3:10}
However is there a way to write an object with some sort of "MultiDimensional Key" as
obj2= {(1, 1): 1, (1, 2): 1, (1, 3): 1, (1, 4): 1, (1, 5): 1}
If not, what could be an easy way of writing such an object???
You can simulate it like this :
obj2 = {
1: {
1: 1,
2: 1,
3: 1,
4: 1,
5: 1
}
}
That's easy to read (for example, to refer to index (1, 3), just do obj2[1][3]), but not easy to write (you have to check the existence of the 2nd level key every time).
Yes, you can achieve this, but without objects.
You can use ES6 WeakMap:
WeakMaps are key/value maps in which keys are objects.
Or you could also use Map:
Mapobjects are simple key/value maps. Any value (both objects and primitive values) may be used as either a key or a value.
Be aware that neither is widely supported, but you can use ES6 Shim (requires native ES5 or ES5 Shim) to support Map, but not WeakMap (see why).
No.
Javascript objects only have string keys.
You could convert your tuples into strings.
obj1 that I have written works correctly.