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showing results for - "flat infinity javascript"
Lana
26 Jun 2020
1// flat(depth), 
2// depth is optional: how deep a nested array structure 
3//		should be flattened.
4//		default value of depth is 1 
5
6const arr1 = [1, 2, [3, 4]];
7arr1.flat(); 
8// [1, 2, 3, 4]
9
10const arr2 = [1, 2, [3, 4, [5, 6]]];
11arr2.flat();
12// [1, 2, 3, 4, [5, 6]]
13
14const arr3 = [1, 2, [3, 4, [5, 6]]];
15arr3.flat(2);
16// [1, 2, 3, 4, 5, 6]
17
18const arr4 = [1, 2, [3, 4, [5, 6, [7, 8, [9, 10]]]]];
19arr4.flat(Infinity);
20// [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
source
Ana Sofia
12 Sep 2018
1const arr = [1, 2, [3, 4]];
2
3// To flat single level array
4arr.flat();
5// is equivalent to
6arr.reduce((acc, val) => acc.concat(val), []);
7// [1, 2, 3, 4]
8
9// or with decomposition syntax
10const flattened = arr => [].concat(...arr);
11
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