main.go 源码
// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials : https://learngoprogramming.com
// In-person training : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus
package main
import (
"fmt"
"os"
"strconv"
"strings"
)
func main() {
var start, stop int
if args := os.Args[1:]; len(args) == 2 {
start, _ = strconv.Atoi(args[0])
stop, _ = strconv.Atoi(args[1])
}
if start == 0 || stop == 0 {
start, stop = 'A', 'Z'
}
fmt.Printf("%-10s %-10s %-10s %-12s\n%s\n",
"literal", "dec", "hex", "encoded",
strings.Repeat("-", 45))
for n := start; n <= stop; n++ {
fmt.Printf("%-10c %-10[1]d %-10[1]x % -12x\n", n, string(n))
}
}
/*
EXAMPLE UNICODE BLOCKS
1 byte
------------------------------------------------------------
asciiStart = '\u0001' -> 32
asciiStop = '\u007f' -> 127
upperCaseStart = '\u0041' -> 65
upperCaseStop = '\u005a' -> 90
lowerCaseStart = '\u0061' -> 97
lowerCaseStop = '\u007a' -> 122
2 bytes
------------------------------------------------------------
latin1Start = '\u0080' -> 161
latin1Stop = '\u00ff' -> 255
3 bytes
------------------------------------------------------------
dingbatStart = '\u2700' -> 9984
dingbatStop = '\u27bf' -> 10175
4 bytes
------------------------------------------------------------
emojiStart = '\U0001f600' -> 128512
emojiStop = '\U0001f64f' -> 128591
*/
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