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EMC Dojo Golang Meetup Cambridge
- 1. Xuebin He Xuebin He Golang EMC Dojo 1
- 4. Xuebin He ❖ Created at Google in 2007 ❖ Open Source in 2009 ❖ First stable release in 2012 4
- 5. Xuebin He 5
- 6. Xuebin He ❖ C: syntax, control-flow, basic data types, call by value, pointers ❖ Oberon-2: packages, imports, method declarations ❖ Alef: concurrency, channel, garbage collection 6
- 7. Xuebin HeXuebin He package main /* #include <stdio.h> #include <stdlib.h> void myprint(char* s) { printf("%sn", s); } */ import "C" import "unsafe" func main() { cs := C.CString("Hello from stdion") C.myprint(cs) C.free(unsafe.Pointer(cs)) }
- 8. Xuebin He TIOBE for June 2016 Position Language Ratings 1 Java 20.794% 2 C 12.376% 3 C++ 6.199% 4 Python 3.900% 40 Go 0.209% 8
- 10. Xuebin HeXuebin He Fast Compilation Easy for OOP Built-in Concurrency Pass by Reference Readability Dependency Management
- 11. Xuebin HeXuebin He Fast Compilation Easy for OOP Built-in Concurrency Pass by Reference Readability Dependency Management
- 12. Xuebin He
- 13. Xuebin He “Go provides a model for software construction that makes dependency analysis easy and avoids much of the overhead of C-style include files and libraries.”
- 14. Xuebin HeXuebin He Fast Compilation Easy for OOP Built-in Concurrency Pass by Reference Readability Dependency Management
- 16. Xuebin He
- 17. Xuebin He “If you could do Java over again, what would you change?”
- 18. Xuebin He “The real problem wasn't classes, but rather implementation inheritance.” “I’d leave out classes.”
- 19. Xuebin He Is-a vs Has-a Prius is a car that has the ability to run Peter has the ability to run Peter is a human that has the ability to run
- 20. Xuebin He Duck Typing “If it looks like a duck and quacks like a duck, it’s a duck.”
- 22. Xuebin HeXuebin He Fast Compilation Easy for OOP Built-in Concurrency Pass by Reference Readability Dependency Management
- 23. Xuebin HeXuebin He Concurrency vs Parallelism Dealing with things at once Doing things at once Core0 Core1 Core0
- 25. Xuebin He Goroutines vs Thread The OS schedules threads to run against available processors Go runtime schedules goroutines to run within a logical processor that is bound to a single OS thread
- 26. Xuebin HeXuebin He Go 1.6.2 (April 2016) 64-bit x86 CPU (A10-7850K 4GHz) | Number of goroutines: 100,000 | Per goroutine: | Memory: 4707.92 bytes | Time: 1.842097 µs
- 27. Xuebin HeXuebin He Fast Compilation Easy for OOP Built-in Concurrency Pass by Reference Readability Dependency Management
- 28. Xuebin He Pass by Value vs Pass by Reference Performance
- 29. Xuebin HeXuebin He Pointer Arithmetic Memory allocation Segment Error
- 30. Xuebin HeXuebin He Fast Compilation Easy for OOP Built-in Concurrency Pass by Reference Readability Dependency Management
- 31. Xuebin HeXuebin He 60+ companies 3,000,000 lines
- 32. Xuebin He VS
- 33. Xuebin HeXuebin He go fmt
- 34. Xuebin HeXuebin He Fast Compilation Easy for OOP Built-in Concurrency Pass by Reference Readability Dependency Management
- 35. Xuebin HeXuebin He gocode ├── bin ├── pkg └── src ├── github.com │ ├── Sirupsen │ │ └── logrus │ ├── kaleo211 │ │ └── golang-demo │ └── kisielk │ ├── errcheck │ └── gotool └── golang.org └── x ├── net └── oauth2
- 36. Xuebin HeXuebin He go get github.com/kaleo211/golang-demo