A brief introduction to Go programming language introduced by Google Inc.

1. By: SAH
Wednesday, July 18, 2010
www.GoParser.blogspot.com
Email: tparser@gmail.com

2. Contents of the session
• Introduction
• Why Go, a new programming language?
• Design goals
• Has or Hasn’t

3. Introduction
• It’s a Google • Developed by:
product Robert Griesemer,
• Project was Robert C. Pike, Ken
started in 2007. Thompson and
• Officially others.
announced in
Nov. 2009

4. Introduction cont’d
• Concurrent
• System programming Language

5. Introduction cont’d
• Garbage-Collected

6. Introduction cont’d
Currently
Experimental

7. Introduction cont’d
• Open Source (Source code is available under BSD license)

8. Why Go, a new programming language?

9. Why Go…..? Cont’d
Much has been changed but no new language to address those,
say the following changes:

10. Why Go…..? Cont’d
• Networked and Distributed environment.
• Client server environment.
• Clustering.

11. Why Go…..? Cont’d
• To run on it has been possible to have:
o More Efficient Hardware.
o Multi core and multi chips Processors.
• Rise of dynamically typed languages.
• Sprawling Libraries and Dependency chains.
• Each main stream language compromise alternatively.
o Efficient compilation,
o Efficient execution,
o Ease of programming,
• Lack of modern concepts like: garbage collection and
parallel computing in popular systems languages.

12. Why Go…..? Cont’d
All these cannot be addressed well by libraries
or Tools; a new language was called for.
"it wasn't enough to just add features to
existing programming languages, because
sometimes you can get more in the long run by
taking things away…. They wanted to start from
scratch and rethink everything." Robert C. Pike

13. Design Goals

14. Design Goals cont’d
• System Language
• Fast compilation

15. Design Goals cont’d
• Easy dependency analysis and avoid much of the over head of C-Style include files
& libraries.
• To make types feel lighter weight than in typical OO languages.
• Combine features of interpreted, dynamically typed languages in a system
language. (e.g: ease of programming)
• Garbage collected

16. Design Goals cont’d
• Concurrent
• Propose an approach for the construction of system software on
multicores machine.
• Increase writability/productivity (e.g: reduce the amount of typing)

17. Has or Hasn’t
• Syntax is C-like
• Statically typed
• Procedural paradigm, Imperative programming style
• Shorthand syntax for variable assignment
• Closures by anonymous functions
• Parallelism/concurrency by “Goroutines” & “Channel” mechanism.
• Structures
• Pointers and References

18. Has or Hasn’t con’t
• OO? (Yes/No)
• Interfaces
• Built-in string type
• No Assertions
• No Exception handling
• No while or do-while.
• Compiled executables are completely native binaries unlike managed code
however, have some runtime components that get embedded in the executables.

19. What other says
– TIOBE: Programming language of the year of
2009 (www.tiobe.com).
– Google is going to have its own language like
others to fill its tool box.
– Please change the name of your programming
language. (Francis G. McCabe - developer of the
Go! programming language)
– The name is more appropriate for embedded
systems’ language.

20. References
• www.golang.org
• www.google-opensource.blogspot.com
• Concepts of Programming Languages
by Robert W. Sebesta - Addison Wesley.
A Special thanks to Mr. Abdul Wahab for his kind supervision during the
course work.
*****
For comments & further details visit::. www.goparser.blogspot.com
or email::. tparser@gmail.com

21. The End
Be Green - Go Green