xexi

if (!process.env.NODE_PATH) {
  console.log();
  if (process.env.SHELL === '/bin/zsh') {
    console.log('  Please set environment variable NODE_PATH in ~/.zshrc:');
  } else if (process.env.SHELL === '/bin/bash') {
    console.log('  Please set environment variable NODE_PATH in ~/.bashrc:');
  } else {
    console.log('  Please set environment variable NODE_PATH:');
  }
  console.log();

xexi

ex>
npm install [email protected] --ignore-scripts

xexi

"use strict";

function makeBall(cb){
    var arr = [];
    for(var i=1; i<=100; i++){
        // if(!_.includes([1, 2, 3], i))  If any number is to be excluded ( _ by lodash )
        arr.push(i);
    }
    cb(arr)
}

xexi

function randomIntFromInterval(min,max)
{
    return Math.floor(Math.random()*(max-min+1)+min);
}

xexi

function zerofill(number, length) {
    // Setup
    var result = number.toString();
    var pad = length - result.length;

    while(pad > 0) {
        result = '0' + result;
        pad--;
    }

xexi

'use strict';

var obj = { year: 2017 }; // year is user input

function journey(a, cb){
    a.country = "go usa";
    cb(a);
}

function journey2(a, cb){

xexi

function dec2bin(dec){
    return (dec >>> 0).toString(2); // >>>  zero fill right shift due to signed bit
}

function bin2exclamation(bin){
    var arr = [];
    for(var i=0; i< bin.length; i++){
        arr.push(parseInt(bin.substr(i, 1)) === 1 ? 0 : 1);
    }
    return arr.join('');

xexi

// conf set
"myredis" : "redis://myredis.com:6379"

// process grep ex
ps aux | grep redis-server
kill -9 22292

ps -ef | grep -i 'redis-server'
kill -9 PID owned by redis

xexi

const names = ['Mike', 'Matt', 'Nancy', 'Adam', 'Jenny', 'Nancy', 'Carl']

const count = names => 
  names.reduce((a, b) => 
    Object.assign(a, {[b]: (a[b] || 0) + 1}), {})

const duplicates = dict => 
  Object.keys(dict).filter((a) => dict[a] > 1)

console.log(count(names)) // { Mike: 1, Matt: 1, Nancy: 2, Adam: 1, Jenny: 1, Carl: 1 }

xexi

var data = [
    { count: '12', year: '1956' },
    { count: '1', year: '1971' },
    { count: '33', year: '1989' },
    { count: '33', year: '1988' }
];
data.sort(function (x, y) { return x.count - y.count || x.year - y.year; });
console.log(data);