iprefixes

List all possible prefixes.

Alternatives: iprefixes, prefixes.
Similar: randomPrefix, prefixes, hasPrefix.

function iprefixes(x, n)
// x: an array
// n: number of values [-1 ⇒ any]

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

[...xarray.iprefixes([1, 2])];
// → [ [], [ 1 ], [ 1, 2 ] ]

[...xarray.iprefixes([1, 2, 3])];
// → [ [], [ 1 ], [ 1, 2 ], [ 1, 2, 3 ] ]

References

• Data.List.inits() : Haskell