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function promiseMap(xs, f) {
  const reducer = (ysAcc$, x) =>
    ysAcc$.then(ysAcc => f(x).then(y => ysAcc.push(y) && ysAcc));
  return xs.reduce(reducer, Promise.resolve([]));
}

/* Example */

const axios = require('axios');

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var get_ie_version = function () {
    var sAgent = window.navigator.userAgent;
    var Idx = sAgent.indexOf("MSIE");

    // If IE, return version number.
    if (Idx > 0) {
        return parseInt(sAgent.substring(Idx+ 5, sAgent.indexOf(".", Idx)));
    }
    // Condition Check IF IE 11 and or MS Edge
    else if ( !!navigator.userAgent.match(/Trident\/7\./)

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var options={poll_time:200},localStorageShim=function(t){var e,r="__localStorageShim",n="pairs",o="localStorageShim Error: ";const a=[];try{if(localStorage.setItem("a",4),4!=localStorage.getItem("a"))throw 1;e=function(){this.setItem=function(t,e){return localStorage.setItem(t,e)},this.getItem=function(t){return localStorage.getItem(t)}}}catch(c){e=function(){var e,c,i=indexedDB.open(r,7),u={},s=function(){e=db.transaction(n).objectStore(n),e.openCursor().onsuccess=function(t){var e,r=t.target.result;r&&(e=r.value,u[e.k]=[e.v,r.key],r["continue"]())}},l=function(t,r){if(t+="",r+="",!u[t]||u[t][0]!==r){u[t]=u[t]||[],u[t][0]=r,clearInterval(c),e=db.transaction(n,"readwrite").objectStore(n);var o=[{k:t,v:r}];u[t][1]&&o.push(u[t][1]),e=e.put.apply(window,o),e.onsuccess=d}},d=function(){s(),c=setInterval(s,t.poll_time)};i.onupgradeneeded=function(t){var e,r=t.target.result;try{e=t.target.transaction.objectStore(n)}catch(o){e=r.createObjectStore(n,{autoIncrement:!0})}try{e.createIndex("k","k",{unique:!0}),e.createI

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// Author: Renat Tuktarov ([email protected])

const retry = function(fn, prev) {
  return new Promise((current, reject) => {
    const resolve = _ => (prev && prev()) || current();

    fn(resolve, delay => {
      setTimeout(_ => {
        retry(fn, resolve);
      }, delay);

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function RateLimit(fn, delay, context) {
  var queue = [], timer = null;
    
  function processQueue() {
    var item = queue.shift();
    if (item)
      fn.apply(item.context, item.arguments);
    if (queue.length === 0)
      clearInterval(timer), timer = null;
  }

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/*
 Sort array of objects based on another array
 Original function:

function mapOrder (array, order, key) {
  array.sort( function (a, b) {
    var A = a[key], B = b[key];
    if (order.indexOf(A) > order.indexOf(B)) {
      return 1;
    } else {

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Title

Description

Add a one-sentence description of this project. and a link to the live demo.

Features

• completed feature: What this feature does
• pending feature: What this feature does

ScreenShots

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For those unfamiliar with 'advanced' i/o redirection in bash: 
1) 2>&- ("close output file descriptor 2", which is stderr) has the same result as 2> /dev/null; 
2) >&2 is a shortcut for 1>&2, which you may recognize as "redirect stdout to stderr". 

See the Advanced Bash Scripting Guide i/o redirection page for more info. 
– mikewaters Dec 21 '11 at 19:48 
-comment from : https://stackoverflow.com/questions/592620/check-if-a-program-exists-from-a-bash-script

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/* Extend the Underscore object with the following methods */

// Rate limit ensures a function is never called more than every [rate]ms
// Unlike underscore's _.throttle function, function calls are queued so that
//   requests are never lost and simply deferred until some other time
//
// Parameters
// * func - function to rate limit
// * rate - minimum time to wait between function calls
// * async - if async is true, we won't wait (rate) for the function to complete before queueing the next request

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/*
 * node-ws - pure Javascript WebSockets server
 * Copyright Bradley Wright <[email protected]>
 */

// Use strict compilation rules - we're not animals
'use strict';

var net = require('net'),
    crypto = require('crypto');