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 Go is a new programming language. Fast compilation times Statically-Typed Language Non-Object Oriented But ... Security Open Source Concurrent Simple Efficient and Productive powerful

 Design Start in 2007 Released in 2009 Designed and Support By GoogleCompany Designers: Robert Griesemer, Rob Pike, KenThompson Version 1.0 release in March 2012 Development continues with an active community ...

 Web applications Server Command-line tools Games Scientific computing And etc....

 C language : Basic Syntax , Simple Structor Java : Inheritance via interface , Package Definitions C# language : Package Definitions JavaScript : Polymorphism Independent of Inheritance A combination of the above languages Is formed Go ProgrammingLanguage

 Google Iron.io Sound Cloud Canonical Heroku Carbon Games SmugMug Bitly Cloud

 Faster than PHP,Python, Perl,Node.js, Ruby,... A bit slower thanC, C++ and Java (sometimes faster than Java) SeeThis Link For Comparison: http://www.techempower.com/benchmarks/ ...

 Linux BSD, OpenBSD Windows Mac OS Plan 9

 IntelliJ SublimeText 2 LiteIDE Intype NetBeans Eclipse Zeus and etc ...

 go command [arguments] Commands: build compile packages and dependencies clean remove object files doc run godoc on package sources fix run go tool fix on packages fmt run gofmt on package sources get download and install packages and dependencies install compile and install packages and dependencies list list packages run compile and run Go program test test packages vet run go tool vet on packages Example: go run hello.go

 package main import "fmt" func main() { fmt.Println("GolangTutorial") }

 Packages consists of one or more source file - lib (.go) package main Each SourceFile starts with a package package main import "fmt" func main() { fmt.Println("Golang Tutorial") }

 Import decleration is used to express a dependency on another package: import "fmt“ packages are imported package main import "fmt" func main() { fmt.Println("Golang Tutorial") }

 OneLine: package main import "fmt" // this is a comment func main() { fmt.Println("HelloWorld") } MultiLine: package main import "fmt" /* this is a comment this is a multiline */ func main() { fmt.Println("HelloWorld") }

 int bool string int int8 int16 int32 int64 uint uint8 uint16 uint32 uint64 uintptr byte rune float32 float64 complex64 complex128

 Type Conversion in Golang Is different package main import "fmt" func main(){ var x float64 = 10.5 var y int = int(x) fmt.Println(y) }

 Variables can store values var i int var f float64 = 1.5 var b bool = true var s string = "golang" Shortcut : i := 10 s := "Go-lang.ir" f := 1.5 b := false

 Constants are declared like variables, but with the const keyword.Constants can be character, string, boolean, or numeric values. package main import "fmt" const Pi = 3.14 func main() { const World = "golang" fmt.Println("Hello",World) fmt.Println("Pi is:", Pi) const Check = true fmt.Println("Check ?", Check) }

 MultiValue in Array var list = […]int{1,2,3,4,5 } var list = [5]int{ 1,2,3,4,5 } list := […]int{1,2,3,4,5 } list := [5]int{ 1,2,3,4,5 } package main import "fmt" func main() { var a [2]string a[0] = "Hello" a[1] = "World" fmt.Println(a[0], a[1]) fmt.Println(a) }

 A slice points to an array of values and also includes a length var list = []int{ 1, 2, 3 } var list = []string{ "foo", "bar", "zoo" } list := []int{ 1, 2, 3 } list := []string{ "foo", "bar", "zoo" } package main import "fmt" func main() { p := []int{2, 3, 5, 7, 11, 13} fmt.Println("p ==", p) for i := 0; i < len(p); i++ { fmt.Printf("p[%d] == %dn", i, p[i]) } }

 M := map[string]string {} package main import "fmt" func main(){ M := map[string]string { "x":"golang.org", "y":"go-lang.ir", } fmt.Println(M["x"],M["y"]) }

 var M map[string]string M = make(map[string]string) package main import "fmt" var M map[string]string func main(){ M := make(map[string]string) M = map[string]string { "x":"golang.org", "y":"go-lang.ir", } fmt.Println(M["x"],M["y"]) }

 package main import "fmt" func main(){ var a int = 2 var b *int = &a a = 10 fmt.Println(a, *b) }

 struct is a collection of fields typeTeacher struct { Name string Family string Tell string } package main import "fmt" typeTeacher struct { Name string Family string Tell string } func main() { T :=Teacher{Name: "Erfan", Family: "Akbarimanesh" ,Tell : "0571"} fmt.Println(T.Name,T.Family,T.Tell) }

 type Num int type Str string type MapType map[string]int package main import "fmt" type MapType map[string]int func main(){ M := make(MapType) M = MapType { "x":10, "y":20, } fmt.Println(M["x"],M["y"]) }

 package main import "fmt" func add(x int, y int) int { return x * y } func main() { fmt.Println(add(10, 2)) }

 package main import "fmt" func Print_Value(x, y string) (string, string) { return y, x } func main() { a, b := Print_Value("golang", ".org") fmt.Println(a, b) }

Erfan AkbarimaneshGolang Developer My Profile: Click Here Person Email: Mr.Akbarimanesh@gmail.com Work EMail: info@go-lang.ir

 Golang English: golang.org Golang Persian: go-lang.ir Package Documentation: golang.org/pkg Golang Document: golang.org/docThank you

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