moveWithin$

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Subhajit Sahu edited this page Nov 20, 2022 · 14 revisions

Move part of array within.

Alternatives: moveWithin, moveWithin$.
Similar: copy, copyWithin, moveWithin.

function moveWithin$(x, j, i, I)
// x: an array (updated)
// j: write index [0]
// i: read start index [0]
// I: read end index [|x|]

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

var x = [1, 2, 3, 4, 5, 6];
array.moveWithin$(x, 0, 1, 3);
// → [ 2, 3, 1, 4, 5, 6 ] (2,3 to left)

x;
// → [ 2, 3, 1, 4, 5, 6 ]

var x = [1, 2, 3, 4, 5, 6];
array.moveWithin$(x, 6, 3, 5);
// → [ 1, 2, 3, 6, 4, 5 ] (4,5 to right)

References