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Go

Getting Started

If statement

if true {
    fmt.Println("Yes!")
}

See: Flow control

Comments

// Single line comment
/\* Multi-
 line comment \*/

Functions

package main
import "fmt"
// The entry point of the programs
func main() {
    fmt.Println("Hello world!")
    say("Hello Go!")
}
func say(message string) {
    fmt.Println("You said: ", message)
}

See: Functions

Variables

var s1 string
s1 = "Learn Go!"
// declare multiple variables at once
var b, c int = 1, 2
var d = true

Short declaration

s1 := "Learn Go!"        // string
b, c := 1, 2             // int
d := true                // bool

See: Basic types

hello.go

package main
import "fmt"
func main() {
    fmt.Println("Hello, world!")
}

Run directly

$ go run hello.go
Hello, world!

Or try it out in the Go repl

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