Golang
- 2. Getting to know Go A short introduction By Saray Chak, Web Developer
- 3. What is Go? Go is a compiled, concurrent, garbage-collected, and statically typed programming language developed at Goolge by Robert Griesemer, Rob Pike, and Ken Thompson.
- 5. History - 2007, started and built by Robert Griesemer, Rob Pike and Ken Thompson as a part-time project. - 2008, a lot of others people help to bring go from prototype to reality - 2009, go become a public Open Source project. - 2010, starts to have adoption by other programmers
- 6. Why Go? - Eliminate slowness - Eliminate clumsiness - Improve productivity
- 7. Who are using Go?
- 8. What will you see in Go? - Simple syntax - Compiled - Garbage-collected - Great standard library - Statically and stronger typed - Concurrent (goroutines) - Multiple return values - Go approach (Object Oriented without inheritance) - Pointers - Testing - And so on...
- 9. What will you don’t see in Go? - Exception handling - Inheritance - Method overloading
- 10. Go is a tool Go is a tool for managing Go source code. - build - compile packages and dependencies - run - compile and run Go program - clean - remove object files - env - print Go environment information - test - test packages and benchmarks - Others : fix, fmt, get, install, list, version, vet.
- 11. Compiles go build helloworld.go -> helloworld.exe
- 12. Packages - Each Go program are compound per packages - Program starts from main package
- 13. Variable - The var instruction declares a list of variables - The type is informed at the end - Inside a function, the short form := can be used instead of a var declaration
- 14. Functions Functions could have zero or more arguments
- 15. Multiple return values A function can have multiple return values
- 16. Looping For and Forever - Go has for as looping structure and it is very similar with C or Java code, except for () - for can run forever
- 17. If Condition - It is very similar with C or Java code, except for ()
- 18. What more? - Switch - Struct - Map - Slice - Interface - Pointer - Receiver function - Range - Error - And a lot more
- 19. A web server It is simple to build a web server in Go
- 20. Concurrency (goroutines) - Every concurrently executing activity in Go is known as Goroutine. - A gorountine is a lightweight thread managed by Go - To send or receive information between the goroutines, use channels
- 21. Goroutine Create more thread using keyword “go”
- 22. Channels Channel is the only way to communicate with goroutine
- 23. Garbage collection Go provides automatic garbage collection of allocated memory. It is not necessary to release memory explicitly. There is no need to worry about heap-allocated vs. stack-allocated storage.
- 24. Conclusion - Go is a really nice language. It is easy to write and read. - Go is a really fast, because it is compiled to machine code. - Go has a well written standard libraries. - Go supports multithreading and concurrency. - Go provides automatic garbage collection of allocated memory. - Go comes with built-in testing tool - Go is quite young, so it still developing - Go has no OOP approach
- 25. References - https://github.com/golang/go/wiki/GoForCPPProgrammers - https://golang.org/ - https://pkg.go.dev/std
- 26. Question?