58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
// For more tutorials: https://blog.learngoprogramming.com
|
|
//
|
|
// Copyright © 2018 Inanc Gumus
|
|
// Learn Go Programming Course
|
|
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
|
|
//
|
|
|
|
package main
|
|
|
|
import "fmt"
|
|
|
|
func main() {
|
|
str := "hey"
|
|
bytes := []byte{104, 101, 121}
|
|
|
|
// same as: []byte("hey")
|
|
fmt.Printf(`"hey" as bytes : %d`+"\n", []byte(str))
|
|
|
|
// same as: string([]byte{104, 101, 121})
|
|
fmt.Printf("bytes as string : %q\n", string(bytes))
|
|
|
|
// runes are unicode codepoints (numbers)
|
|
fmt.Println()
|
|
fmt.Printf("%c : %[1]d\n", 'h')
|
|
fmt.Printf("%c : %[1]d\n", 'e')
|
|
fmt.Printf("%c : %[1]d\n", 'y')
|
|
|
|
// a rune literal is typeless
|
|
// you can put it in any numeric type
|
|
var (
|
|
anInt int = 'h'
|
|
anInt8 int8 = 'h'
|
|
anInt16 int16 = 'h'
|
|
anInt32 int32 = 'h'
|
|
|
|
// rune literal's default type is: rune
|
|
// so, you don't need to specify it.
|
|
// aRune rune = 'h'
|
|
aRune = 'h'
|
|
|
|
// and so on...
|
|
)
|
|
|
|
fmt.Println()
|
|
fmt.Printf("rune literals are typeless:\n\t%T %T %T %T %T\n",
|
|
anInt, anInt8, anInt16, anInt32, aRune)
|
|
|
|
fmt.Println()
|
|
|
|
// all are the same rune
|
|
|
|
// beginning with go 1.13 you can type: 0b0110_1000 instead
|
|
// fmt.Printf("%q as binary: %08[1]b\n", 0b0110_1000)
|
|
fmt.Printf("%q in decimal: %[1]d\n", 104)
|
|
fmt.Printf("%q in binary : %08[1]b\n", 'h')
|
|
fmt.Printf("%q in hex : 0x%[1]x\n", 0x68)
|
|
}
|