interleave

Places values of an iterable between another.

iterable.interleave(x, y, [m], [n]);
// x: an iterable
// y: another iterable
// m: number of values from x (1)
// n: number of values from y (1)

const iterable = require('extra-iterable');

var x = [1, 2, 3, 4];
var y = [10, 20, 30];
[...iterable.interleave(x, [10])];
// [1, 10, 2, 10, 3, 10, 4]

[...iterable.interleave(x, y)];
// [1, 10, 2, 20, 3, 30, 4]

[...iterable.interleave(x, y, 2)];
// [1, 2, 10, 3, 4]

[...iterable.interleave(x, y, 1, 2)];
// [1, 10, 20, 2, 30, 10, 3, 20, 30, 4]

references

• Data.List.intersperse: Haskell
• Data.List.intercalate: Haskell