locutus/clojure/core/interpose.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.interpose = interpose;
function interpose(separator, values) {
    //      discuss at: https://locutus.io/clojure/interpose/
    // parity verified: Clojure 1.12
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //       example 1: interpose('-', ['a', 'b', 'c'])
    //       returns 1: ['a', '-', 'b', '-', 'c']
    //       example 2: interpose(0, [1, 2, 3])
    //       returns 2: [1, 0, 2, 0, 3]
    //       example 3: interpose(',', [])
    //       returns 3: []
    if (!Array.isArray(values) || values.length === 0) {
        return [];
    }
    const out = [];
    for (let i = 0; i < values.length; i++) {
        if (i > 0) {
            out.push(separator);
        }
        out.push(values[i]);
    }
    return out;
}