prefixes

Lists all possible prefixes. 🏃 📼 📦 🌔 📒

Similar: prefix, prefixes, hasPrefix.

array.prefixes(x, [n]);
// x: an array
// n: number of values (-1 => any)

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

[...array.prefixes([1, 2])];
// [ [], [ 1 ], [ 1, 2 ] ]

[...array.prefixes([1, 2, 3])];
// [ [], [ 1 ], [ 1, 2 ], [ 1, 2, 3 ] ]

references

• Data.List.inits: Haskell