Let's Get Going!

A quick introduction to the Go programming language!

Transcript

1. LET’S GET GOING! ABU ASHRAF MASNUN
2. QUICK INTRODUCTION • Developed at Google • Ken Thompson, Rob Pike, Robert Griesemer • Started as an experiment in 2007, Announced in 2009 and 1.0 came in 2012 • Replacement for C++ but now attracts people from all sorts of languages • Easy to learn, reason about, statically compiled yet productive
3. WHY I LIKE IT? • Tooling & stdlib • Simple & Easy to Learn • Very very fast & Low memory foot print • Built for system programming / Networking • Concurrency • Single Binary & Cross Compilation • Dependencies from VCS
4. TOOLING • go run • go build • go install • go fmt • go get • go test • and others
5. STANDARD LIBRARY • Batteries included (almost) • Many packages for common tasks • Modern day stdlib for a modern day language • System, networking, web development well covered
6. SIMPLICITY • Intentionally kept less expressive • The language is relatively small • Less memorization • Easier to read & Maintain
7. EASY TO LEARN • Designed for new, fresh graduates • The official specification is less than 40 pages • Very small number of built in keywords • One type of loop • The documentation is very detailed • “Effective Go” • Friendly community
8. FAST & LIGHTWEIGHT • Destroys the dynamically typed languages • Surpasses Java easily (and consumes far less memory) • Sometimes beats C/C++
9. SYSTEM / NETWORK PROGRAMMING • You can easily build low level systems • The GC can be a problem • Excellent support for network programming
10. CONCURRENCY • Why is Concurrency Important? • Go routines • Low overhead • Easy to Spawn • M:N Scheduling • Channels • Bi directional communication • select
11. SINGLE BINARY & CROSS COMPILATION • You can generate a single binary executable. • You can embed resources into it easily (packing). • Cross compile on major platforms. • Cross compilation would not work on CGO.
12. VCS & DEPENDENCY MANAGEMENT • You can directly install packages from git / hg • Does not scale well for teams • Vendoring is introduced • I use “Glide” • New solutions are coming
13. WAR STORIES • Iron.io • Disqus • Uber / Grab • Google
14. WHEN NOT TO USE GO?
15. LEARNING RESOURCES • Go Tour (comes as command line tool, too!) • Effective Go • Go By Example • Go Documentation
16. http://masnun.rocks