jamesward

sealed class Bag<out THING> {
    object Empty: Bag<Nothing>()
    data class NonEmpty<out THING>(val thing: THING): Bag<THING>()

    // Make a Bag with a THUNG in it
    companion object {
        fun <THUNG> make(thung: THUNG): Bag<THUNG> = NonEmpty(thung)
    }

    // Do stuff to the THING in the Bag by providing a thingToBagOfThang

jamesward

apiVersion: build.knative.dev/v1alpha1
kind: Build
metadata:
  name: hello-springboot-mvn-build
spec:
  source:
    git:
      url: https://github.com/jamesward/hello-springboot-mvn.git
      revision: master
  template:

jamesward

IMAGE=gcr.io/multiregion-atamel/where-am-i

wget https://github.com/stedolan/jq/releases/download/jq-1.6/jq-linux64
chmod +x jq-linux64
sudo mount -o remount,exec /home

CID=$(docker ps | grep $IMAGE | awk '{ print $1 }')
TOKEN=$(curl "http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/default/token" -H "Metadata-Flavor: Google" | ./jq-linux64 -r ".access_token")
docker login -u oauth2accesstoken -p "$TOKEN" https://gcr.io
docker pull $IMAGE

jamesward

  implicit class TryWithForNot[T](t: Try[T]) {
    def fornot[A](f: Throwable => A): Unit = ???
  }

  implicit class SuccessWithForNot[T](success: Success[T]) {
    def fornot[A](f: Throwable => A): Unit = ()
  }

 implicit class FailureWithForNot[T](failure: Failure[T]) {

jamesward

There comes a point in every Functional Programmer's life where they feel the curse of the Monad has lifted and they must now explain Monads to their friends who just don't get it. What follows is probably wrong and confusing, cause there is no escaping the curse. But here goes...

Suppose you have a system property that contains the name of another system property, like:

KEYNAME=FOO

And you want the value of FOO, like:

FOO=BAR

jamesward

Dreamhouse Einstein Vision Workshop

Create a Heroku Account:
https://signup.heroku.com

Using Heroku Button, deploy the Dreamhouse Einstein Vision:
https://github.com/dreamhouseapp/dreamhouse-pvs-scala

Create a dataset from this URL:
http://www.dreamhouseapp.io/Dreamhouse.zip

jamesward

Keybase proof

I hereby claim:

• I am jamesward on github.
• I am jamesward (https://keybase.io/jamesward) on keybase.
• I have a public key whose fingerprint is 341C 2AE4 7D5F F3A7 EDFB 5989 E57A 697A 70CF E5F9

To claim this, I am signing this object:

jamesward

package controllers;

import play.*;
import play.mvc.*;

import views.html.*;

public class Application extends Controller {

    public static Result index() {

jamesward

Modern Web Apps with Play Framework

Create an app:

play new foo
cd foo

Add dependencies to project/Build.scala:

jamesward

1. Install Eclipse 3.7 or newer
2. Signup for a Heroku account
3. Install the Heroku Eclipse Plugin (Complete the steps up to "Create app from template")