golang example_test 代码
文件路径：/src/unicode/example_test.go
/ Copyright 2015 The Go Authors. All rights reserved.
/ Use of this source code is governed by a BSD-style
/ license that can be found in the LICENSE file.
package unicode_test
import (
"fmt"
"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.
func Example_is() {
/ 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
}
func ExampleSimpleFold() {
fmt.Printf("%#U\n", unicode.SimpleFold('A')) / 'a'
fmt.Printf("%#U\n", unicode.SimpleFold('a')) / 'A'
fmt.Printf("%#U\n", unicode.SimpleFold('K')) / 'k'
fmt.Printf("%#U\n", unicode.SimpleFold('k')) / '\u212A' (Kelvin symbol, K)
fmt.Printf("%#U\n", unicode.SimpleFold('\u212A')) / 'K'
fmt.Printf("%#U\n", unicode.SimpleFold('1')) / '1'
/ Output:
/ U+0061 'a'
/ U+0041 'A'
/ U+006B 'k'
/ U+212A 'K'
/ U+004B 'K'
/ U+0031 '1'
}
func ExampleTo() {
const lcG = 'g'
fmt.Printf("%#U\n", unicode.To(unicode.UpperCase, lcG))
fmt.Printf("%#U\n", unicode.To(unicode.LowerCase, lcG))
fmt.Printf("%#U\n", unicode.To(unicode.TitleCase, lcG))
const ucG = 'G'
fmt.Printf("%#U\n", unicode.To(unicode.UpperCase, ucG))
fmt.Printf("%#U\n", unicode.To(unicode.LowerCase, ucG))
fmt.Printf("%#U\n", unicode.To(unicode.TitleCase, ucG))
/ Output:
/ U+0047 'G'
/ U+0067 'g'
/ U+0047 'G'
/ U+0047 'G'
/ U+0067 'g'
/ U+0047 'G'
}
func ExampleToLower() {
const ucG = 'G'
fmt.Printf("%#U\n", unicode.ToLower(ucG))
/ Output:
/ U+0067 'g'
}
func ExampleToTitle() {
const ucG = 'g'
fmt.Printf("%#U\n", unicode.ToTitle(ucG))
/ Output:
/ U+0047 'G'
}
func ExampleToUpper() {
const ucG = 'g'
fmt.Printf("%#U\n", unicode.ToUpper(ucG))
/ Output:
/ U+0047 'G'
}
func ExampleSpecialCase() {
t := unicode.TurkishCase
const lci = 'i'
fmt.Printf("%#U\n", t.ToLower(lci))
fmt.Printf("%#U\n", t.ToTitle(lci))
fmt.Printf("%#U\n", t.ToUpper(lci))
const uci = 'İ'
fmt.Printf("%#U\n", t.ToLower(uci))
fmt.Printf("%#U\n", t.ToTitle(uci))
fmt.Printf("%#U\n", t.ToUpper(uci))
/ Output:
/ U+0069 'i'
/ U+0130 'İ'
/ U+0130 'İ'
/ U+0069 'i'
/ U+0130 'İ'
/ U+0130 'İ'
}
func ExampleIsDigit() {
fmt.Printf("%t\n", unicode.IsDigit('৩'))
fmt.Printf("%t\n", unicode.IsDigit('A'))
/ Output:
/ true
/ false
}
func ExampleIsNumber() {
fmt.Printf("%t\n", unicode.IsNumber('Ⅷ'))
fmt.Printf("%t\n", unicode.IsNumber('A'))
/ Output:
/ true
/ false
}
func ExampleIsLetter() {
fmt.Printf("%t\n", unicode.IsLetter('A'))
fmt.Printf("%t\n", unicode.IsLetter('7'))
/ Output:
/ true
/ false
}
func ExampleIsLower() {
fmt.Printf("%t\n", unicode.IsLower('a'))
fmt.Printf("%t\n", unicode.IsLower('A'))
/ Output:
/ true
/ false
}
func ExampleIsUpper() {
fmt.Printf("%t\n", unicode.IsUpper('A'))
fmt.Printf("%t\n", unicode.IsUpper('a'))
/ Output:
/ true
/ false
}
func ExampleIsTitle() {
fmt.Printf("%t\n", unicode.IsTitle('Dž'))
fmt.Printf("%t\n", unicode.IsTitle('a'))
/ Output:
/ true
/ false
}
func ExampleIsSpace() {
fmt.Printf("%t\n", unicode.IsSpace(' '))
fmt.Printf("%t\n", unicode.IsSpace('\n'))
fmt.Printf("%t\n", unicode.IsSpace('\t'))
fmt.Printf("%t\n", unicode.IsSpace('a'))
/ Output:
/ true
/ true
/ true
/ false
}