Go Examples

main.go

package main

import (
	"fmt"
	"os"
)

const n = 500000000

func main() {
	fmt.Println("hello world", "motherfucker")
	fmt.Println("1-3", "=", 1-3)
	i, err := fmt.Printf("%T", 3)

	var f int
	f, t := 1, "eee"
	fmt.Fprintln(os.Stdout, f, t, i, err)

	const d = 3e20 / n
	fmt.Println(d)

	var a [5]int
	fmt.Println(a)

	s := make([]int, 4, 10)
	s[0] = 2
	s[1] = 2
	s[2] = 2
	s[3] = 2

	s2 := append(s, 6)
	fmt.Println(s)

	s2[1] = 4
	fmt.Println(s2)
	fmt.Println(s)

	m := make(map[string]int)
	m["babab"] = 0
	m["bab"] = 10
	m["babsdab👆👆👆"] = 120
	fmt.Println("...", m)

	for k, v := range m {
		println(k, v)
	}
	swo := new(Main)
	r, err := swo.do(0, 1)
	println(r, err)
	swo.B.doAV()
}

type Main struct {
	*A
	B
}

type B struct {
}

func (b B) doAV() {
	fmt.Println("do BV")
}

type A struct {
}

func (a *A) doA() {
	fmt.Println("do *A")
}

func (a A) doAV() {
	fmt.Println("do AV")
}

func (m Main) do(a int, b int) (int, error) {
	return a + b, nil
}