alexanderjamesking

import org.scalatest.Assertions
import org.scalatest.concurrent.ScalaFutures

import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.Future

trait FutureExceptions {
  self: Assertions with ScalaFutures =>

  def getExceptionFromFuture(future: Future[Any]): Throwable = {

alexanderjamesking

sbt "issues/test:testOnly stepdefs.RunIssuesCucumber"

alexanderjamesking

/**
 * repeats a check until the check is true or the timeout is reached
 * returns a promise that we can return to mocha
 */
function promisePoller(condition,
    interval = 10,
    timeout = 1000,
    onTimeout = new Error("Timed out")) {
    return new Promise(function (resolve, reject) {
        function check() {

alexanderjamesking

"test:alex": "mocha --watch 'modules/issues/test/unit/javascript/**/IssueDetailTest.js' --compilers js:babel-core/register --require ignore-styles --require ./modules/issues/test/unit/util/jsdom-setup",

alexanderjamesking

Docker MySQL

docker run -p 3306:3306 --name local-mysql -e MYSQL_ROOT_PASSWORD=password -d mysql:latest --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci

mysql -h $(docker-machine ip) -uroot -ppassword

alexanderjamesking

killall ssh-agent gpg-agent
unset GPG_AGENT_INFO SSH_AGENT_PID SSH_AUTH_SOCK
eval $(gpg-agent --daemon --enable-ssh-support)

alexanderjamesking

# Looping through an array to form a new array

# non functional (imperative) way
my_array = [1,2,3,4,5]

new_array = [] # requires us to create a structure then modify it using push
my_array.each { | element |
  new_array.push("number " + element.to_s)
}

alexanderjamesking

students = [
  { name: "Bob", cohort: "Nov"},
  { name: "Barry", cohort: "Nov"},
  { name: "Anna", cohort: "Dec"},
  { name: "Igor", cohort: "Dec"},
  { name: "Natalia", cohort: "Feb"}
]

my_hash = {}

alexanderjamesking

Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors

alexanderjamesking

package com.ajk;

import clojure.lang.IFn;

import java.io.ByteArrayInputStream;
import java.io.IOException;

import static clojure.java.api.Clojure.read;
import static clojure.lang.RT.loadResourceScript;
import static clojure.lang.RT.var;