main.go

package main

import "fmt"

const (
	monday = iota + 1
	tuesday
	wednesday
	thursday
	friday
	saturday
	sunday
)

const (
	a = iota
	b
)

func calc() (int, int) {
	return 1, 2
}

func main() {
	fmt.Println(monday)
	fmt.Println(tuesday)
	fmt.Println(wednesday)
	fmt.Println(thursday)
	fmt.Println(friday)
	fmt.Println(saturday)
	fmt.Println(sunday)
	fmt.Println(a)
	fmt.Println(b)

	test := true

	if test, test2 := calc(); test+test2 < 10 {
		fmt.Println("test:", test)
		fmt.Println("test2:", test2)
		fmt.Println("test + test2 < 10")
	}

	fmt.Println("test:", test)

	switch a := 1; {
	case a >= 0:
		fmt.Println("a is true")
		fallthrough
	case a > 200:
		fmt.Println("a is false")
	}

	stringSlice1 := []string{"1", "2", "3", "4"}
	fmt.Println(stringSlice1[:2])
	fmt.Println(stringSlice1[2:])

	stringSlice2 := make([]string, 5, 10)
	copy(stringSlice2, stringSlice1)
	fmt.Println(stringSlice2[0])

	stringSlice2 = append(stringSlice2, "5", "6")
	fmt.Println(stringSlice2)
	fmt.Println(stringSlice2[5])
	fmt.Println(stringSlice2[6])
	stringSlice2 = append(stringSlice2, []string{"7", "8"}...)
	fmt.Println(stringSlice2)
	fmt.Println(stringSlice2[7])
	fmt.Println(stringSlice2[8])
}