kevgathuku

let arr = [];
for (var i = 0; i < 10; i++) {
  arr.push(function() {console.log(i)});
}

let x = 0;
while (x < 10) {
  arr[x]();
  x++;
}

kevgathuku

Mocking an imported function to return different values for different tests

In the top level:

import getVisibleDays from 'react-dates/lib/utils/getVisibleDays';

jest.mock('react-dates/lib/utils/getVisibleDays', () => {
  const moment = require('moment');
  return jest.fn().mockReturnValue({
 '2018-01': [

kevgathuku

bundle exec rake db:drop db:create db:schema:load RAILS_ENV=test

kevgathuku

Deploying from circleci2.0 to Heroku

Resources:

• circleci 2.0 docs
• Managing SSH Keys on Heroku

Steps:

Prerequisites:

• Heroku CLI installed on your computer
• A project deployed to Heroku

kevgathuku

To get the npm cache folder, run npm config get cache

kevgathuku

## Sort Algorithms in Elixir

# Selection Sort

defmodule Selection do
  def sort(list) when is_list(list) do
    do_selection(list, [])
  end

  def do_selection([head|[]], acc) do

kevgathuku

import _ from 'underscore';
import fetch from 'isomorphic-fetch'

class API {
  getCSRFToken() {
    return _.find(document.getElementsByTagName('meta'), (meta) => {
      return meta.name === 'csrf-token'
    }).content
  }

kevgathuku

docker ps | awk {' print $1 '} | tail -n+2 > tmp.txt; for line in $(cat tmp.txt); do docker kill $line; done; rm tmp.txt

kevgathuku

import re
import uuid
import base64

def uuid_url64():
    """Returns a unique, 16 byte, URL safe ID by combining UUID and Base64
    """
    rv = base64.b64encode(uuid.uuid4().bytes).decode('utf-8')
    return re.sub(r'[\=\+\/]', lambda m: {'+': '-', '/': '_', '=': ''}[m.group(0)], rv)

kevgathuku

object Main {
  def main(args: Array[String]): Unit =
    println("Hello, Scala developer!")
}