zbinlin

"use strict";

function sum(buffer) {
    let checksum = 0x0000;
    let parity = buffer.length % 2;
    for (let i = 0, len = buffer.length - parity; i < len; i += 2) {
        checksum += buffer.readUInt16BE(i);
    }
    if (parity) {
        checksum += buffer.readUInt8(buffer.length - 1) << 8 | 0x00;

zbinlin

"use strict";

const format = date => date.toTimeString().split(" ")[0];

/**
 * @param {string} [name=fn.displayName||fn.name||"UNKNOW"] task name
 * @param {(Function|*)} fn task function
 * @param {...} [...args] task function's arguments
 * @returns {}
 */

zbinlin

"use strict";

let http = require("http");
let url = require("url");

let server = http.createServer();

server.on("request", function (req, res) {
    let headers = {};
    for (const key of Object.keys(req.headers)) {

zbinlin

let permut = (arr) => {
    if (typeof arr === "string") {
        arr = arr.split("");
    }
    if (arr.length === 1) {
        return arr;
    }
    let rst = [];
    for (let i = 0, len = arr.length; i < len; i++) {
        let newArr = arr.slice();

zbinlin

/**
 * Auto Currying
 * @param {Function} fn
 * @return {Function}
 */
function curring(fn) {

    var fnLength = fn.length;

    return (function next(argv) {

zbinlin

/*
 * *: alnum
 * #: digit
 * @: alpha
 */
var alpha = [...("a").repeat(6)].map((c, i) => String.fromCharCode(c.charCodeAt(0) + i)).sort(() => Math.random() - 0.5);
var digit = [...("0").repeat(10)].map((c, i) => String.fromCharCode(c.charCodeAt(0) + i)).sort(() => Math.random() - 0.5);
var alnum = [].concat(alpha, digit).sort(() => Math.random() - 0.5);
var collect = {
    "*": alnum,

zbinlin

/**
 * quote function
 * @see {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/quote|MDN}
 * @param {string} str
 * @param {string} quote
 * @returns {string} quote a string
 */
function quoteString(str, quote) {
    str = "" + str;
    quote = "" + (quote || "\"");

zbinlin

/*
 * @param {Function} func
 *   需要进行去抖的函数
 * @param {number} wait
 *   去抖的时间间隔
 * @param {boolean} [lead = false]
 *   是否要在开始执行
 * @returns {Function}
 *   返回一个去抖函数
 */

zbinlin

/*
 * @param {Function} func
 *   需要进行节流的函数
 * @param {number} wait
 *   节流的时间间隔
 * @param {boolean} [trail]
 *   是否要在结尾执行
 * @returns {Function}
 *   返回一个节流函数
 */

zbinlin

/*
 * spiral matrix
 * 根据给出的行（row）与列（col），生成一个螺旋数组（[[x0, y0], .., [x, y]]]）
 * 如 row = 3, col = 4
 * 01, 02, 03, 04
 * 10, 11, 12, 05
 * 09, 08, 07, 06
 * 将生成：
 * [[0, 0], [1, 0], [2, 0], [3, 0], [3, 1], [3, 2], [2, 2], [1, 2], [0, 2], [0, 1], [1, 1], [2, 1]]
 *