unicode

Functions starting with "Is" can be used to inspect which table of range a rune belongs to. Note that runes may fit into more than one range.

package main

import (
	"fmt"
	"unicode"
)

func main() {

	// constant with mixed type runes
	const mixed = "\b5Ὂg̀9! ℃ᾭG"
	for _, c := range mixed {
		fmt.Printf("For %q:\n", c)
		if unicode.IsControl(c) {
			fmt.Println("\tis control rune")
		}
		if unicode.IsDigit(c) {
			fmt.Println("\tis digit rune")
		}
		if unicode.IsGraphic(c) {
			fmt.Println("\tis graphic rune")
		}
		if unicode.IsLetter(c) {
			fmt.Println("\tis letter rune")
		}
		if unicode.IsLower(c) {
			fmt.Println("\tis lower case rune")
		}
		if unicode.IsMark(c) {
			fmt.Println("\tis mark rune")
		}
		if unicode.IsNumber(c) {
			fmt.Println("\tis number rune")
		}
		if unicode.IsPrint(c) {
			fmt.Println("\tis printable rune")
		}
		if !unicode.IsPrint(c) {
			fmt.Println("\tis not printable rune")
		}
		if unicode.IsPunct(c) {
			fmt.Println("\tis punct rune")
		}
		if unicode.IsSpace(c) {
			fmt.Println("\tis space rune")
		}
		if unicode.IsSymbol(c) {
			fmt.Println("\tis symbol rune")
		}
		if unicode.IsTitle(c) {
			fmt.Println("\tis title case rune")
		}
		if unicode.IsUpper(c) {
			fmt.Println("\tis upper case rune")
		}
	}

}

Output:
For '\b':
	is control rune
	is not printable rune
For '5':
	is digit rune
	is graphic rune
	is number rune
	is printable rune
For 'Ὂ':
	is graphic rune
	is letter rune
	is printable rune
	is upper case rune
For 'g':
	is graphic rune
	is letter rune
	is lower case rune
	is printable rune
For '̀':
	is graphic rune
	is mark rune
	is printable rune
For '9':
	is digit rune
	is graphic rune
	is number rune
	is printable rune
For '!':
	is graphic rune
	is printable rune
	is punct rune
For ' ':
	is graphic rune
	is printable rune
	is space rune
For '℃':
	is graphic rune
	is printable rune
	is symbol rune
For 'ᾭ':
	is graphic rune
	is letter rune
	is printable rune
	is title case rune
For 'G':
	is graphic rune
	is letter rune
	is printable rune
	is upper case rune