arrays

Question

how to work with such arrays:
var a= [[]];
who knows give a link to the source

Answer 1

It is an empty nested array, what sort of "work" are you thinking about with such empty array?

Answer 2

Buddy your array only has one element (index 0), which is an empty array. You can't access a[1], left alone a[1][0], there is only one element with index 0.

Can you describe your plan some more?

Answer 3

Is that from SoloLearn? if so, please copy lesson link here so anyone can take a look. Otherwise share a link to the lesson ...

Answer 4

Can you share a link to that code here please? I would like to study it ...

Answer 5

So now the array snake is : [[x, y]]..
Better to add link..

Answer 6

well, something like that
var a =[[]];
a[1][0];

Answer 7

I don't even know how to say it correctly, just there is some kind of lesson or something

Answer 8

this is not sololear, when I studied someone else's code, I saw such lines of code and cannot understand how they work

Answer 9

var x;
var y;
var snake=[[]];
snake[0][0]=x;
snake[0][1]=y;