anicholson

Installing Crystal

• On OSX: brew install crystal-lang
• On Linux: [See instructions][installation_instructions]
• On Windows: Sorry, not yet. You may be able to, but it’s not officially supported.

Further talks

• [Matz' Keynote @ RubyConf 2014][matz]
• [Consider Static Typing: Tom Stuart @ RubyConfAU 2015][stuart]

anicholson

#!/bin/bash

wait_until_up () {

echo "Waiting for $1 to come up!"

until $(curl --output /dev/null --silent --fail "$2"); do
    printf '.'
    sleep 1
done

anicholson

Here's a minimal schema that fails when input has stringified keys, and passes with symbolized keys.

anicholson

# A sample Gemfile
source "https://rubygems.org"

gem 'rack'
gem 'roda'

anicholson

Keybase proof

I hereby claim:

• I am anicholson on github.
• I am andrewdotnich (https://keybase.io/andrewdotnich) on keybase.
• I have a public key ASD9uQS7he9dDqhPl638kbWfHGifEyTiqlDvbNh1UGpA9Qo

To claim this, I am signing this object:

anicholson

module Hangman (Model, Letter, initialModel, Action, update, view, main) where

{-| A hangman game in Elm.

@docs Model
@docs Letter
@docs Action
@docs initialModel
@docs update
@docs view

anicholson

$ rspec sorting_spec.rb
F

Failures:

  1) SortableThing can be sorted
     Failure/Error: sorted = [thing1, thing2].sort
     ArgumentError:
       comparison of RSpec::Mocks::InstanceVerifyingDouble with RSpec::Mocks::InstanceVerifyingDouble failed
     # ./sorting_spec.rb:20:in `sort'

anicholson

// ----
// Sass (v3.4.12)
// Compass (v1.0.3)
// ----

$foo: blue;

#one {
 color: $foo;
 

anicholson

class Bowling
  class EmptyFrame
    def pin_total
      0
    end

    def scores
      [0,0]
    end

anicholson

    class Traveller
      def what_are_you
        puts "I'm a Backpacker"
      end

      def self.preferred_accommodation
        puts "Hostels"
      end
    end