add: strings and projects

19-strings-runes-bytes/02-bytes-runes-strings-charset-table/main.go

@@ -0,0 +1,69 @@
+// 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"
+	"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
+*/