garybernhardt

This document has moved!

It's now here, in The Programmer's Compendium. The content is the same as before, but being part of the compendium means that it's actively maintained.

yang-wei

Should be work with 0.18

Destructuring(or pattern matching) is a way used to extract data from a data structure(tuple, list, record) that mirros the construction. Compare to other languages, Elm support much less destructuring but let's see what it got !

Tuple

myTuple = ("A", "B", "C")
myNestedTuple = ("A", "B", "C", ("X", "Y", "Z"))

mgold

Using Mailboxes in Elm

Max Goldstein | July 30, 2015 | Elm 0.15.1

In Elm, signals always have a data source associated with them. Window.dimensions is exactly what you think it is, and you can't send your own events on it. You can derive your own signals from these primitives using map, filter, and merge, but the timing of events is beyond your control.

This becomes a problem when you try to add UI elements. We want to be able to add checkboxes and dropdown menus, and to receive the current state of these elements as a signal. So how do we do that?

The Bad Old Days

tiegz

class FoobarMailer < BaseMailer
  # The method you'll actually call to generate the batched email
  def batched_foobar
    # Recipient Variables
    recipients = {"you@somewhere.com" => {"name" => "You Youington"}}

    mail(to: "me@somewhere.com") do |format|
      # Mailgun requires you to base64 your Recipient Variables JSON
      format.custom('application/json', content_transfer_encoding: "base64") do
        render text: Base64.encode64(recipients.to_json)

schickling

require "active_record"

namespace :db do

  db_config       = YAML::load(File.open('config/database.yml'))
  db_config_admin = db_config.merge({'database' => 'postgres', 'schema_search_path' => 'public'})

  desc "Create the database"
  task :create do
    ActiveRecord::Base.establish_connection(db_config_admin)

marc0der

#!/bin/bash

function printit {
    echo "This is from an embedded function: $1"
}

function printthat {
    echo "This is the first line."
    $1 $2
    echo "This is the third line."

jasonrudolph

# Credit http://stackoverflow.com/a/2514279
for branch in `git branch -r | grep -v HEAD`;do echo -e `git show --format="%ci %cr" $branch | head -n 1` \\t$branch; done | sort -r

pfleidi

require 'rubygems'
require 'socket'
include Socket::Constants

class ChatServer

  def initialize
    @reading = Array.new
    @writing = Array.new
    @clients = Hash.new