guilhermepontes

// original gist
const shuffleArray = arr => arr.sort(() => Math.random() - 0.5);

// fully random by @BetonMAN
const shuffleArray = arr => arr
  .map(a => [Math.random(), a])
  .sort((a, b) => a[0] - b[0])
  .map(a => a[1]);

shuffleArray([1, 2, 3]) //[3, 1, 2]

mishrsud

Summary

SQL Joins explained briefly with examples. Applies to MS SQL. Assumes both tables contain unique records. Extracted from Jeff Attwood's blog post: https://blog.codinghorror.com/a-visual-explanation-of-sql-joins/

Sample Data

TABLE-A

id	name
1	Pirate

rbrigden

rbrigden

abdominocardi.ac
autotr.actor
cephalotr.actor
cocontr.actor
coen.actor
cornf.actor
counter.actor
effr.actor
idemf.actor
lithofr.actor

AtulKsol

psql: FATAL: Peer authentication failed for user “postgres” (or any user)

The connection failed because by default psql connects over UNIX sockets using peer authentication, that requires the current UNIX user to have the same user name as psql. So you will have to create the UNIX user postgres and then login as postgres or use sudo -u postgres psql database-name for accessing the database (and psql should not ask for a password).

If you cannot or do not want to create the UNIX user, like if you just want to connect to your database for ad hoc queries, forcing a socket connection using psql --host=localhost --dbname=database-name --username=postgres (as pointed out by @meyerson answer) will solve your immediate problem.

But if you intend to force password authentication over Unix sockets instead of the peer method, try changing the following pg_hba.conf* line:

from

betweenbrain

var fs       = require('fs');
var Promise  = require('promise');
var promises = [];
var readline = require('readline');

var readFile = function (file) {
    return new Promise(function (resolve, reject) {
        var lines = [];
        var rl    = readline.createInterface({
            input: fs.createReadStream('./logs/' + file)

joshmarinacci

Enter Chat and press enter
<div><input id=input placeholder=you-chat-here /></div>

Chat Output
<div id=box></div>

<script src=https://cdn.pubnub.com/sdk/javascript/pubnub.4.0.11.min.js></script>
<script>(function(){
      var pubnub = new PubNub({ publishKey : 'demo', subscribeKey : 'demo' });
      function $(id) { return document.getElementById(id); }

pefianco

Stride Core Values

Humility

• Admit that you might be wrong
• Admit what you don’t know
• Make the team’s success your success
• Bring your pair along with you and double check your assumptions when you can’t
• Bring the team along with you, solutions with team buy in are more valuable than going rogue, even when you’re right
• Listen to feedback and take ownership of action items

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

DenisCarriere

import geocoder
import requests
import unicodecsv as csv
import time

container = {}
g = geocoder.google("New Brunswick, Canada")
url = "https://www.realtor.ca/api/Listing.svc/PropertySearch_Post"

PropertySearchType = {