01:49 – Erik Michaels-Ober Introduction

• Twitter
• GitHub
• Ruby Rogues Episode #127: Erik Michaels-Ober

02:07 – The Crystal Programming Language and Statically Typed Programming Languages

• Erik Michaels-Ober: An Introduction to Crystal @ PolyConf 15

06:54 – Type Inference

• Union Types
• Duck Typing
• Monkey Patching
• Sandi Metz Blog Post on the Wrong Abstraction

15:06 – Crystal vs Rust or Go

20:10 – Linting

• Rubocop

20:44 – Type Annotations and Perimeters

• Keyword Arguments

22:53 – The History of Crystal and its Development as a Language

• Crystal Docs
• Crystal GitHub Repo
• The Future of Crystal (Christmastime Blog Post)

24:41 – Annotation and Return Value

25:35 – Type Inferencing (Cont’d)

28:24 – Crystal REPL (ICR)

32:15 – Getting Involved with Crystal and the Development of the Language

• Crystal to_proc

40:08 – Threading and Concurrency

44:28 – Crystalshards

• Crystal Weekly

49:30 – Use Cases and Benchmarks

• Crystal Standard Library
• wc.cr

01:03:15 – Compile Errors    

More on Crystal

• Erik Michaels-Ober: Crystal Programming Language @ RubyC 2015
• Interview for RubyC-2015 with Erik Michaels-Ober
• Built-in formatting tool Issue

Picks

Easy Bash Prompt Generator (Jessica)
Logitech Wireless Headset Dual H820e Double-Ear Stereo Business Headset (David)
Ruby Rogues Episode #127: Erik Michaels-Ober (Erik)
fish shell (Erik)
Rails Girls Summer of Code (Erik)
RescueTime (Avdi)
The 7 Habits of Highly Effective People: Powerful Lessons in Personal Change by Stephen R. Covey (Avdi)
Whiplash White IPA (Avdi)