diff --git a/gstr_z_all_example_test.go b/gstr_z_all_example_test.go
deleted file mode 100644
index 79fe3023d..000000000
--- a/gstr_z_all_example_test.go
+++ /dev/null
@@ -1,2127 +0,0 @@
-package gstr_test
-
-import (
-	"fmt"
-
-	"github.com/gogf/gf/v2/text/gstr"
-)
-
-func ExampleAddSlashes() {
-	var (
-		str   = `'aa'"bb"cc\r\n\d\t`
-		rsStr = gstr.AddSlashes(str)
-	)
-
-	fmt.Println(rsStr)
-
-	// Output:
-	// \'aa\'\"bb\"cc\\r\\n\\d\\t
-}
-
-func ExampleCaseCamel() {
-	var (
-		str   = `goframe_is very nice.to-use`
-		rsStr = gstr.CaseCamel(str)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// GoframeIsVeryNiceToUse
-}
-
-func ExampleCaseCamelLower() {
-	var (
-		str   = `goframe_is very nice.to-use`
-		rsStr = gstr.CaseCamelLower(str)
-	)
-
-	fmt.Println(rsStr)
-
-	// Output:
-	// goframeIsVeryNiceToUse
-}
-
-func ExampleCaseDelimited() {
-	var (
-		str   = `goframe_is_very-nice.to-use`
-		del   = uint8(35)
-		rsStr = gstr.CaseDelimited(str, del)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// goframe#is#very#nice#to#use
-}
-
-func ExampleCaseDelimitedScreaming() {
-	{
-		var (
-			str   = `goframe_is Very Nice.to-use`
-			del   = uint8(35)
-			rsStr = gstr.CaseDelimitedScreaming(str, del, true)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str   = `GOFRAME_IS VERY NICE.TO-USE`
-			del   = uint8(35)
-			rsStr = gstr.CaseDelimitedScreaming(str, del, false)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// GOFRAME#IS#VERY#NICE#TO#USE
-	// goframe#is#very#nice#to#use
-}
-
-func ExampleCaseKebab() {
-	var (
-		str   = `goframe_is Very Nice.to-use`
-		rsStr = gstr.CaseKebab(str)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// goframe-is-very-nice-to-use
-}
-
-func ExampleCaseKebabScreaming() {
-	var (
-		str   = `goframe_is Very Nice.to-use`
-		rsStr = gstr.CaseKebabScreaming(str)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// GOFRAME-IS-VERY-NICE-TO-USE
-}
-
-func ExampleCaseSnake() {
-	var (
-		str   = `goframe_is Very Nice.to-use`
-		rsStr = gstr.CaseSnake(str)
-	)
-
-	fmt.Println(rsStr)
-
-	// Output:
-	// goframe_is_very_nice_to_use
-}
-
-func ExampleCaseSnakeFirstUpper() {
-	var (
-		str   = `GoframeIsVeryNiceToUse`
-		rsStr = gstr.CaseSnakeFirstUpper(str)
-	)
-
-	fmt.Println(rsStr)
-
-	// Output:
-	// goframe_is_very_nice_to_use
-}
-
-func ExampleCaseSnakeScreaming() {
-	var (
-		str   = `goframe_is Very Nice.to-use`
-		rsStr = gstr.CaseSnakeScreaming(str)
-	)
-
-	fmt.Println(rsStr)
-
-	// Output:
-	// GOFRAME_IS_VERY_NICE_TO_USE
-}
-
-func ExampleChr() {
-	var (
-		ascii = 65
-		rsStr = gstr.Chr(ascii)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// A
-}
-
-func ExampleChunkSplit() {
-	{
-		var (
-			body     = `1234`
-			chunkLen = 2
-			end      = "#"
-			rsStr    = gstr.ChunkSplit(body, chunkLen, end)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			body     = `我爱Goframe`
-			chunkLen = 1
-			end      = "-"
-			rsStr    = gstr.ChunkSplit(body, chunkLen, end)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			body     = `1234`
-			chunkLen = 1
-			end      = ""
-			rsStr    = gstr.ChunkSplit(body, chunkLen, end)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// May Output:
-	// 12#34#
-	// 我-爱-G-o-f-r-a-m-e-
-	// "1\r\n2\r\n3\r\n4\r\n"
-}
-
-func ExampleCompare() {
-	{
-		var (
-			a     = "C"
-			b     = "C"
-			rsStr = gstr.Compare(a, b)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			a     = "A"
-			b     = "B"
-			rsStr = gstr.Compare(a, b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			a     = "C"
-			b     = "B"
-			rsStr = gstr.Compare(a, b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 0
-	// -1
-	// 1
-}
-
-func ExampleCompareVersion() {
-	{
-		var (
-			a = "v2.11.9"
-			b = "v2.10.8"
-
-			rsStr = gstr.CompareVersion(a, b)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			a     = "A.10.8"
-			b     = "A.19.7"
-			rsStr = gstr.CompareVersion(a, b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			a     = "2.8.beta"
-			b     = "2.8"
-			rsStr = gstr.CompareVersion(a, b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 1
-	// -1
-	// 0
-}
-
-func ExampleCompareVersionGo() {
-
-	{
-		var (
-			a     = "v2.11.9"
-			b     = "v2.10.8"
-			rsStr = gstr.CompareVersionGo(a, b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			a     = "v0.0.2-20180626092158-b2ccc119800e"
-			b     = "v1.0.1-20190626092158-b2ccc519800e"
-			rsStr = gstr.CompareVersionGo(a, b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			a     = "v4.20.1"
-			b     = "v4.20.1+incompatible"
-			rsStr = gstr.CompareVersionGo(a, b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 1
-	// -1
-	// 0
-}
-
-func ExampleContains() {
-	{
-		var (
-			str    = `goframe_is Very Nice.to-use`
-			substr = `goframe`
-			rsStr  = gstr.Contains(str, substr)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str    = `goframe_is Very Nice.to-use`
-			substr = `Goframe`
-			rsStr  = gstr.Contains(str, substr)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// true
-	// false
-}
-
-func ExampleContainsAny() {
-	{
-		var (
-			s     = `goframe_is Very Nice.to-use`
-			chars = "g"
-			rsStr = gstr.ContainsAny(s, chars)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			s     = `goframe_is Very Nice.to-use`
-			chars = "G"
-			rsStr = gstr.ContainsAny(s, chars)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			s     = `goframe_is Very Nice.to-use`
-			chars = "Nice"
-			rsStr = gstr.ContainsAny(s, chars)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// true
-	// false
-	// true
-}
-
-func ExampleContainsI() {
-	{
-		var (
-			str    = `goframe_is Very Nice.to-use`
-			substr = "go"
-			rsStr  = gstr.ContainsI(str, substr)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str    = `goframe_is Very Nice.to-use`
-			substr = "Go"
-			rsStr  = gstr.ContainsI(str, substr)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str    = `goframe_is Very Nice.to-use`
-			substr = "Golang"
-			rsStr  = gstr.ContainsI(str, substr)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// true
-	// true
-	// false
-}
-
-func ExampleCount() {
-	{
-		var (
-			str    = `goframe_is Very Nice.to-use`
-			substr = "goframe"
-			rsStr  = gstr.Count(str, substr)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str    = `goframe_is Very Nice.to-use`
-			substr = "golang"
-			rsStr  = gstr.Count(str, substr)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 1
-	// 0
-}
-
-func ExampleCountChars() {
-	{
-		var (
-			str   = `goframe_is Very Nice.to-use`
-			rsStr = gstr.CountChars(str)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str   = `goframe_is Very Nice.to-use`
-			rsStr = gstr.CountChars(str, true)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// May Output:
-	// map[ :2 -:1 .:1 N:1 V:1 _:1 a:1 c:1 e:4 f:1 g:1 i:2 m:1 o:2 r:2 s:2 t:1 u:1 y:1]
-	// map[-:1 .:1 N:1 V:1 _:1 a:1 c:1 e:4 f:1 g:1 i:2 m:1 o:2 r:2 s:2 t:1 u:1 y:1]
-
-}
-
-func ExampleCountI() {
-	{
-		var (
-			s      = `goframe_is Very Nice.to-use`
-			substr = "goframe"
-			rsStr  = gstr.CountI(s, substr)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			s      = `goframe_is Very Nice.to-use`
-			substr = "Goframe"
-			rsStr  = gstr.CountI(s, substr)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			s      = `Goframe_is Very Nice.to-use`
-			substr = "golang"
-			rsStr  = gstr.CountI(s, substr)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 1
-	// 1
-	// 0
-}
-
-func ExampleCountWords() {
-	var (
-		str   = `goframe is Very Nice to use ! goframe Very Nice !`
-		rsStr = gstr.CountWords(str)
-	)
-
-	fmt.Println(rsStr)
-
-	// Output:
-	// map[!:2 Nice:2 Very:2 goframe:2 is:1 to:1 use:1]
-}
-
-func ExampleEqual() {
-	{
-		var (
-			a     = `A`
-			b     = `a`
-			rsStr = gstr.Equal(a, b)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			a     = `A`
-			b     = `A`
-			rsStr = gstr.Equal(a, b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			a     = `C`
-			b     = `B`
-			rsStr = gstr.Equal(a, b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// true
-	// true
-	// false
-}
-
-func ExampleExplode() {
-	var (
-		str       = `goframe_is_Very_Nice_to_use`
-		delimiter = "_"
-		rsStr     = gstr.Explode(delimiter, str)
-	)
-
-	fmt.Printf(`%#v`, rsStr)
-
-	// Output:
-	// []string{"goframe", "is", "Very", "Nice", "to", "use"}
-}
-
-func ExampleFields() {
-	var (
-		str   = `goframe is Very Nice to-use`
-		rsStr = gstr.Fields(str)
-	)
-
-	fmt.Printf(`%#v`, rsStr)
-
-	// Output:
-	// []string{"goframe", "is", "Very", "Nice", "to-use"}
-}
-
-func ExampleHasPrefix() {
-	{
-		var (
-			s      = `goframe_is Very Nice.to-use`
-			prefix = "goframe"
-			rsStr  = gstr.HasPrefix(s, prefix)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			s      = `goframe_is Very Nice.to-use`
-			prefix = "Goframe"
-			rsStr  = gstr.HasPrefix(s, prefix)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// true
-	// false
-}
-
-func ExampleHasSuffix() {
-	{
-		var (
-			s      = `goframe_is Very Nice.to-use`
-			prefix = "use"
-			rsStr  = gstr.HasSuffix(s, prefix)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			s      = `goframe_is Very Nice.to-use`
-			prefix = "Use"
-			rsStr  = gstr.HasSuffix(s, prefix)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// true
-	// false
-}
-
-func ExampleHideStr() {
-	{
-		var (
-			str     = `13800138000`
-			percent = 40
-			hide    = `*`
-			rsStr   = gstr.HideStr(str, percent, hide)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str     = `AAAAAAAAAA`
-			percent = 60
-			hide    = `@`
-			rsStr   = gstr.HideStr(str, percent, hide)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 138****8000
-	// AA@@@@@@AA
-}
-
-func ExampleImplode() {
-	var (
-		pieces = []string{"goframe", "is", "Very", "Nice", "to", "use"}
-		glue   = "-"
-		rsStr  = gstr.Implode(glue, pieces)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// goframe-is-Very-Nice-to-use
-}
-
-func ExampleInArray() {
-	{
-		var (
-			a     = []string{"goframe", "is", "Very", "Nice", "to", "use"}
-			s     = "goframe"
-			rsStr = gstr.InArray(a, s)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			a     = []string{"goframe", "is", "Very", "Nice", "to", "use"}
-			s     = "golang"
-			rsStr = gstr.InArray(a, s)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// true
-	// false
-}
-
-func ExampleIsLetterLower() {
-	{
-		var (
-			b     byte = 65 // In ASCII is "a"
-			rsStr      = gstr.IsLetterLower(b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			b     byte = 97 // In ASCII is "A"
-			rsStr      = gstr.IsLetterLower(b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// false
-	// true
-}
-
-func ExampleIsLetterUpper() {
-	{
-		var (
-			b     byte = 65 // In ASCII is "a"
-			rsStr      = gstr.IsLetterUpper(b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			b     byte = 97 // In ASCII is "A"
-			rsStr      = gstr.IsLetterUpper(b)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// true
-	// false
-}
-
-func ExampleIsNumeric() {
-	{
-		var (
-			s     = "88"
-			rsStr = gstr.IsNumeric(s)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			s     = "aa66bb88"
-			rsStr = gstr.IsNumeric(s)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			s     = "3.1415926"
-			rsStr = gstr.IsNumeric(s)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// true
-	// false
-	// true
-}
-
-func ExampleIsSubDomain() {
-	{
-		var (
-			subDomain  = `s.goframe.org`
-			mainDomain = `goframe.org`
-			rsStr      = gstr.IsSubDomain(subDomain, mainDomain)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			subDomain  = `s.s.goframe.org`
-			mainDomain = `goframe.org`
-			rsStr      = gstr.IsSubDomain(subDomain, mainDomain)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			subDomain  = `s.s.goframe.org`
-			mainDomain = `*goframe.org`
-			rsStr      = gstr.IsSubDomain(subDomain, mainDomain)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// true
-	// true
-	// false
-}
-
-func ExampleJoin() {
-	var (
-		array = []string{"goframe", "is", "Very", "Nice", "to", "use"}
-		sep   = `,`
-		rsStr = gstr.Join(array, sep)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// goframe,is,Very,Nice,to,use
-}
-
-func ExampleJoinAny() {
-	{
-		var (
-			sep   = `@`
-			arr1  = []string{"goframe", "is", "Very", "Nice", "to", "use"}
-			rsStr = gstr.JoinAny(arr1, sep)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			sep    = `,`
-			arr2   = []int{99, 73, 85, 66}
-			rsStr2 = gstr.JoinAny(arr2, sep)
-		)
-		fmt.Println(rsStr2)
-	}
-
-	{
-		var (
-			sep  = `,`
-			arr3 = []interface{}{
-				"Mary",
-				18,
-				99.5,
-				"<br>",
-				"Jack",
-				19,
-				66.5,
-			}
-			rsStr3 = gstr.JoinAny(arr3, sep)
-		)
-		fmt.Println(rsStr3)
-	}
-
-	{
-		type StructA struct {
-			Name string
-			Age  int
-		}
-		var (
-			sep = `|`
-
-			arr4 = []StructA{
-				{"Mary", 18},
-				{"Jack", 18},
-				{"Lucy", 18},
-			}
-			rsStr = gstr.JoinAny(arr4, sep)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// goframe@is@Very@Nice@to@use
-	// 99,73,85,66
-	// Mary,18,99.5,<br>,Jack,19,66.5
-	// {"Name":"Mary","Age":18}|{"Name":"Jack","Age":18}|{"Name":"Lucy","Age":18}
-}
-
-func ExampleLcFirst() {
-	{
-		var (
-			str   = `Goframe`
-			rsStr = gstr.LcFirst(str)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str   = `Goframe is Very Nice to use.`
-			rsStr = gstr.LcFirst(str)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// goframe
-	// goframe is Very Nice to use.
-}
-
-func ExampleLenRune() {
-	{
-		var (
-			str   = `goframe is Very Nice to use`
-			rsStr = gstr.LenRune(str)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str   = `123 4567 890`
-			rsStr = gstr.LenRune(str)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str   = `Goframe是一个非常好用的Go语言框架!`
-			rsStr = gstr.LenRune(str)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 27
-	// 12
-	// 22
-}
-
-func ExampleLevenshtein() {
-	{
-		var (
-			str1    = "Hello World"
-			str2    = "ello World"
-			costIns = 1
-			costRep = 1
-			costDel = 1
-			rsStr   = gstr.Levenshtein(str1, str2, costIns, costRep, costDel)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str1    = "Hello World"
-			str2    = "ello Worles"
-			costIns = 10
-			costRep = 20
-			costDel = 30
-			rsStr   = gstr.Levenshtein(str1, str2, costIns, costRep, costDel)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 1
-	// 60
-}
-
-func ExampleNl2Br() {
-	var (
-		str = `goframe
-is
-Very
-Nice
-to
-use`
-		rsStr = gstr.Nl2Br(str)
-	)
-
-	fmt.Println(rsStr)
-
-	// Output:
-	// goframe<br>is<br>Very<br>Nice<br>to<br>use
-}
-
-func ExampleNumberFormat() {
-
-	{
-		var (
-			number       float64 = 123456
-			decimals             = 2
-			decPoint             = "."
-			thousandsSep         = ","
-			rsStr                = gstr.NumberFormat(number, decimals, decPoint, thousandsSep)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			number       = 1234.56
-			decimals     = 1
-			decPoint     = ","
-			thousandsSep = " "
-			rsStr        = gstr.NumberFormat(number, decimals, decPoint, thousandsSep)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			number       = 1234.5678
-			decimals     = 3
-			decPoint     = "."
-			thousandsSep = ","
-			rsStr        = gstr.NumberFormat(number, decimals, decPoint, thousandsSep)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 123,456.00
-	// 1 234,6
-	// 1,234.568
-}
-
-func ExampleOctStr() {
-	var (
-		str   = `\346\200\241`
-		rsStr = gstr.OctStr(str)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// 怡
-}
-
-// '103' is the 'g' in ASCII
-func ExampleOrd() {
-	var (
-		str   = `goframe`
-		rsStr = gstr.Ord(str)
-	)
-
-	fmt.Println(rsStr)
-
-	// Output:
-	// 103
-
-}
-
-func ExampleParse() {
-	{
-		var (
-			str      = `v1=m&v2=n`
-			rsStr, _ = gstr.Parse(str)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str      = `v[a][a]=m&v[a][b]=n`
-			rsStr, _ = gstr.Parse(str)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		// The form of nested Slice is not yet supported.
-		var str = `v[][]=m&v[][]=n`
-		rsStr, err := gstr.Parse(str)
-		if err != nil {
-			panic(err)
-		}
-		fmt.Println(rsStr)
-	}
-
-	{
-		// This will produce an error.
-		var str = `v=m&v[a]=n`
-		rsStr, err := gstr.Parse(str)
-		if err != nil {
-			println(err)
-		}
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str      = `a .[[b=c`
-			rsStr, _ = gstr.Parse(str)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// May Output:
-	// map[v1:m v2:n]
-	// map[v:map[a:map[a:m b:n]]]
-	// map[v:map[]]
-	// Error: expected type 'map[string]interface{}' for key 'v', but got 'string'
-	// map[]
-	// map[a___[b:c]
-}
-
-func ExamplePos() {
-	{
-		var (
-			haystack = `goframe_is Very Nice.to-use`
-			needle   = `Nice`
-			rsStr    = gstr.Pos(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `goframe_is Very Nice.to-use`
-			needle      = `Nice`
-			startOffset = 16
-			rsStr       = gstr.Pos(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `goframe_is Very Nice.to-use`
-			needle      = `Nice`
-			startOffset = 17
-			rsStr       = gstr.Pos(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack = `goframe_is Very Nice.to-use`
-			needle   = `nice`
-			rsStr    = gstr.Pos(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 16
-	// 16
-	// -1
-	// -1
-}
-
-func ExamplePosI() {
-	{
-		var (
-			haystack = `goframe_is Very Nice.to-use`
-			needle   = `Nice`
-			rsStr    = gstr.PosI(haystack, needle)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `goframe_is Very Nice.to-use`
-			needle      = `Nice`
-			startOffset = 16
-			rsStr       = gstr.PosI(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `goframe_is Very Nice.to-use`
-			needle      = `Nice`
-			startOffset = 17
-			rsStr       = gstr.PosI(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack = `goframe_is Very Nice.to-use`
-			needle   = `nice`
-			rsStr    = gstr.PosI(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 16
-	// 16
-	// -1
-	// 16
-}
-
-func ExamplePosIRune() {
-	{
-		var (
-			haystack = `goframe_is Very Nice.to-use`
-			needle   = `Nice`
-			rsStr    = gstr.PosIRune(haystack, needle)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `Goframe是个非常好用的框架.`
-			needle      = `Nice`
-			startOffset = 16
-			rsStr       = gstr.PosIRune(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `Goframe是个非常好用的框架.`
-			needle      = `Nice`
-			startOffset = 17
-			rsStr       = gstr.PosIRune(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack = `Goframe是个非常好用的框架.`
-			needle   = `nice`
-			rsStr    = gstr.PosIRune(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 16
-	// -1
-	// -1
-	// -1
-}
-
-func ExamplePosR() {
-	{
-		var (
-			haystack = `goframe_is Very Nice.to-use`
-			needle   = `Nice`
-			rsStr    = gstr.PosR(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `goframe_is Very Nice.to-use`
-			needle      = `Nice`
-			startOffset = 16
-			rsStr       = gstr.PosR(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `goframe_is Very Nice.to-use`
-			needle      = `Nice`
-			startOffset = 17
-			rsStr       = gstr.PosR(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack = `goframe_is Very Nice.to-use`
-			needle   = `nice`
-			rsStr    = gstr.PosR(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 16
-	// 16
-	// -1
-	// -1
-}
-
-func ExamplePosRI() {
-	{
-		var (
-			haystack = `goframe_is Very Nice.to-use`
-			needle   = `Nice`
-			rsStr    = gstr.PosRI(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `goframe_is Very Nice.to-use`
-			needle      = `Nice`
-			startOffset = 16
-			rsStr       = gstr.PosRI(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `goframe_is Very Nice.to-use`
-			needle      = `Nice`
-			startOffset = 17
-			rsStr       = gstr.PosRI(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack = `goframe_is Very Nice.to-use`
-			needle   = `nice`
-			rsStr    = gstr.PosRI(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 16
-	// 16
-	// -1
-	// 16
-
-}
-
-func ExamplePosRIRune() {
-	{
-		var (
-			haystack = `Goframe是个非常好用的框架`
-			needle   = `好用`
-			rsStr    = gstr.PosRIRune(haystack, needle)
-		)
-
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `Goframe是个非常好用的框架`
-			needle      = `框架`
-			startOffset = 16
-			rsStr       = gstr.PosRIRune(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `Goframe是个非常好用的框架`
-			needle      = `golang`
-			startOffset = 17
-			rsStr       = gstr.PosRIRune(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack = `Goframe是个非常好用的框架`
-			needle   = `goframe`
-			rsStr    = gstr.PosRIRune(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 11
-	// 14
-	// -1
-	// 0
-}
-
-func ExamplePosRRune() {
-	{
-		var (
-			haystack = `goframe_is Very Nice.to-use`
-			needle   = `Nice`
-			rsStr    = gstr.PosRRune(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `goframe_is Very Nice.to-use`
-			needle      = `Nice`
-			startOffset = 16
-			rsStr       = gstr.PosRRune(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `Goframe是中国开发者的福利.`
-			needle      = `Nice`
-			startOffset = 17
-			rsStr       = gstr.PosRRune(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack = `Goframe是中国开发者的福利.`
-			needle   = `开发者`
-			rsStr    = gstr.PosRRune(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 16
-	// 16
-	// -1
-	// 10
-}
-
-func ExamplePosRune() {
-	{
-		var (
-			haystack = `goframe_is Very Nice.to-use`
-			needle   = `Nice`
-			rsStr    = gstr.PosRune(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `我喜欢Goframe框架`
-			needle      = `框架`
-			startOffset = 16
-			rsStr       = gstr.PosRune(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack    = `我喜欢Goframe框架`
-			needle      = `框架`
-			startOffset = 17
-			rsStr       = gstr.PosRune(haystack, needle, startOffset)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack = `我喜欢Goframe框架`
-			needle   = `goframe`
-			rsStr    = gstr.PosRune(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 16
-	// 10
-	// -1
-	// -1
-}
-
-func ExampleQuoteMeta() {
-	{
-		var (
-			str   = `.\+?[^]()`
-			rsStr = gstr.QuoteMeta(str)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str   = `https://goframe.org/pages/viewpage.action?pageId=1114327`
-			rsStr = gstr.QuoteMeta(str)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// \.\\\+\?\[\^\]\(\)
-	// https://goframe\.org/pages/viewpage\.action\?pageId=1114327
-
-}
-
-func ExampleRepeat() {
-	var (
-		input      = `goframe `
-		multiplier = 3
-		rsStr      = gstr.Repeat(input, multiplier)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// goframe goframe goframe
-}
-
-func ExampleReplace() {
-	{
-		var (
-			origin  = `goframe_is_Very_Nice_to_use!`
-			search  = `_`
-			replace = `+`
-			rsStr   = gstr.Replace(origin, search, replace)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			origin  = `goframe_is_Very_Nice_to_use!`
-			search  = `_`
-			replace = `+`
-			count   = 2
-			rsStr   = gstr.Replace(origin, search, replace, count)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// goframe+is+Very+Nice+to+use!
-	// goframe+is+Very_Nice_to_use!
-}
-
-func ExampleReplaceByArray() {
-	{
-		var (
-			origin = `Golang is Very Good`
-			array  = []string{"o", "O"}
-			rsStr  = gstr.ReplaceByArray(origin, array)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			origin = `Golang is Very Good`
-			array  = []string{"Golang", "Goframe", "Good", "Nice"}
-			rsStr  = gstr.ReplaceByArray(origin, array)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// GOlang is Very GOOd
-	// Goframe is Very Nice
-}
-
-func ExampleReplaceByMap() {
-	{
-		var (
-			origin   = `Golang is Very Good`
-			replaces = map[string]string{
-				"Golang": "Goframe",
-				"Good":   "Nice",
-			}
-			rsStr = gstr.ReplaceByMap(origin, replaces)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			origin   = `Golang is Very Good`
-			replaces = map[string]string{
-				"golang": "Goframe",
-				"good":   "Nice",
-			}
-			rsStr = gstr.ReplaceByMap(origin, replaces)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// Goframe is Very Nice
-	// Golang is Very Good
-}
-
-func ExampleReplaceI() {
-	var (
-		origin  = `goframe is Very Nice to use`
-		search  = `Goframe`
-		replace = `golang`
-		count   = 3
-		rsStr   = gstr.ReplaceI(origin, search, replace, count)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// golang is Very Nice to use
-}
-
-func ExampleReplaceIByArray() {
-	var (
-		origin = `golang is very nice`
-		array  = []string{"Golang", "GoFrame", "Nice", "GOOD"}
-		rsStr  = gstr.ReplaceIByArray(origin, array)
-	)
-
-	fmt.Println(rsStr)
-
-	// Output:
-	// GoFrame is very GOOD
-}
-
-func ExampleReplaceIByMap() {
-	{
-		var (
-			origin   = `Golang is Very Good`
-			replaces = map[string]string{
-				"Golang": "Goframe",
-				"Good":   "Nice",
-			}
-			rsStr = gstr.ReplaceIByMap(origin, replaces)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			origin   = `Golang is Very Good`
-			replaces = map[string]string{
-				"golang": "Goframe",
-				"good":   "Nice",
-			}
-			rsStr = gstr.ReplaceIByMap(origin, replaces)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// Goframe is Very Nice
-	// Goframe is Very Nice
-}
-
-func ExampleReverse() {
-	var (
-		str   = `123456`
-		rsStr = gstr.Reverse(str)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// 654321
-}
-
-func ExampleSearchArray() {
-	{
-		var (
-			a     = []string{"goframe", "is", "Very", "Nice"}
-			s     = `goframe`
-			rsStr = gstr.SearchArray(a, s)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			a     = []string{"goframe", "is", "Very", "Nice"}
-			s     = `Very`
-			rsStr = gstr.SearchArray(a, s)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			a     = []string{"goframe", "is", "Very", "Nice"}
-			s     = `use`
-			rsStr = gstr.SearchArray(a, s)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 0
-	// 2
-	// -1
-}
-
-func ExampleShuffle() {
-	var (
-		str   = `abcdefg`
-		rsStr = gstr.Shuffle(str)
-	)
-	fmt.Println(rsStr)
-
-	// May Output:
-	// efcgbda
-}
-
-func ExampleSimilarText() {
-	{
-		var (
-			percent *float64
-			first   = `goframe_is`
-			second  = `go-nice`
-			rsStr   = gstr.SimilarText(first, second, percent)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			first  = `AaBbCcDd`
-			second = `ad`
-		)
-		p := 0.80
-		rsStr := gstr.SimilarText(first, second, &p)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 3
-	// 2
-}
-
-func ExampleSoundex() {
-	{
-		var (
-			str    = `Euler`
-			str2   = `Ellery`
-			rsStr  = gstr.Soundex(str)
-			rsStr2 = gstr.Soundex(str2)
-		)
-		fmt.Println(rsStr, rsStr2)
-	}
-
-	{
-		var (
-			str    = `Gauss`
-			str2   = `Ghosh`
-			rsStr  = gstr.Soundex(str)
-			rsStr2 = gstr.Soundex(str2)
-		)
-		fmt.Println(rsStr, rsStr2)
-	}
-
-	{
-		var (
-			str    = `Lloyd`
-			str2   = `Ladd`
-			rsStr  = gstr.Soundex(str)
-			rsStr2 = gstr.Soundex(str2)
-		)
-		fmt.Println(rsStr, rsStr2)
-	}
-
-	// Output:
-	// E406 E406
-	// G020 G020
-	// L030 L030
-}
-
-func ExampleSplit() {
-	var (
-		str       = `GoFrame_Nice`
-		delimiter = `_`
-		rsStr     = gstr.Split(str, delimiter)
-	)
-	fmt.Printf(`%#v`, rsStr)
-
-	// Output:
-	// []string{"GoFrame", "Nice"}
-}
-
-func ExampleSplitAndTrim() {
-	var (
-		str           = `    goframe, is,       Very ,Nice ,to,      use`
-		delimiter     = `,`
-		characterMask = ` `
-		rsStr         = gstr.SplitAndTrim(str, delimiter, characterMask)
-	)
-	fmt.Printf("%#v", rsStr)
-
-	// Output:
-	// []string{"goframe", "is", "Very", "Nice", "to", "use"}
-}
-
-func ExampleStr() {
-	var (
-		haystack = `xxx.jpg`
-		needle   = `.`
-		rsStr    = gstr.Str(haystack, needle)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// .jpg
-}
-
-func ExampleStrEx() {
-	var (
-		haystack = `https://goframe.org/index.html?a=1&b=2`
-		needle   = `?`
-		rsStr    = gstr.StrEx(haystack, needle)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// a=1&b=2
-}
-
-func ExampleStrLimit() {
-	{
-		var (
-			str    = `1234567890.png`
-			length = 4
-			suffix = `.jpg`
-			rsStr  = gstr.StrLimit(str, length, suffix)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str    = `123456789`
-			length = 3
-			suffix = `...`
-			rsStr  = gstr.StrLimit(str, length, suffix)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 1234.jpg
-	// 123...
-}
-
-func ExampleStrLimitRune() {
-	{
-		var (
-			str    = `123456789`
-			length = 5
-			suffix = "ABCD"
-			rsStr  = gstr.StrLimitRune(str, length, suffix)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str    = `goframe是一个好用的框架她提供了非常丰富的工具给使用者.`
-			length = 15
-			suffix = "!"
-			rsStr  = gstr.StrLimitRune(str, length, suffix)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// 12345ABCD
-	// goframe是一个好用的框架!
-}
-
-func ExampleStrTill() {
-	{
-		var (
-			haystack = `goframe是一个好用的框架,她提供了非常丰富的工具给使用者.`
-			needle   = `,`
-			rsStr    = gstr.StrTill(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack = `https://goframe.org/index.html?test=123456`
-			needle   = `?`
-			rsStr    = gstr.StrTill(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// goframe是一个好用的框架,
-	// https://goframe.org/index.html?
-}
-
-func ExampleStrTillEx() {
-	{
-		var (
-			haystack = `xxxx.txt`
-			needle   = `.txt`
-			rsStr    = gstr.StrTillEx(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			haystack = `文件名.zip`
-			needle   = `.zip`
-			rsStr    = gstr.StrTillEx(haystack, needle)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// xxxx
-	// 文件名
-}
-
-func ExampleStripSlashes() {
-	var (
-		str   = `C:\\windows\\GoFrame\\test`
-		rsStr = gstr.StripSlashes(str)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// C:\windows\GoFrame\test
-}
-
-func ExampleSubStr() {
-	{
-		var (
-			str    = `123456789`
-			start  = 0
-			length = 2
-			subStr = gstr.SubStr(str, start, length)
-		)
-		fmt.Println(subStr)
-	}
-
-	{
-		var (
-			str    = `123456789`
-			start  = 5
-			length = 3
-			subStr = gstr.SubStr(str, start, length)
-		)
-		fmt.Println(subStr)
-	}
-
-	// Output:
-	// 12
-	// 678
-}
-
-func ExampleSubStrRune() {
-	{
-		var (
-			str    = `123456789`
-			start  = 5
-			length = 4
-			subStr = gstr.SubStrRune(str, start, length)
-		)
-		fmt.Println(subStr)
-	}
-	{
-		var (
-			str    = `一二三四五六七八九零`
-			start  = 5
-			length = 4
-			subStr = gstr.SubStrRune(str, start, length)
-		)
-		fmt.Println(subStr)
-	}
-	// Output:
-	// 6789
-	// 六七八九
-}
-
-func ExampleToLower() {
-	var (
-		s     = `GOFRAME IS VERY NICE TO USE`
-		rsStr = gstr.ToLower(s)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// goframe is very nice to use
-}
-
-func ExampleToUpper() {
-	var (
-		s     = `goframe is very nice to use`
-		rsStr = gstr.ToUpper(s)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// GOFRAME IS VERY NICE TO USE
-}
-
-func ExampleTrim() {
-	var (
-		str           = `.abc.def..`
-		characterMask = "."
-		rsStr         = gstr.Trim(str, characterMask)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// abc.def
-}
-
-func ExampleTrimAll() {
-	var (
-		str           = `.abc.def...`
-		characterMask = "."
-		rsStr         = gstr.TrimAll(str, characterMask)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// abcdef
-}
-
-func ExampleTrimLeft() {
-	var (
-		str           = `..abc.def.. `
-		characterMask = "."
-		rsStr         = gstr.TrimLeft(str, characterMask)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// abc.def..
-}
-
-func ExampleTrimLeftStr() {
-	var (
-		str   = `...abcd..efg...`
-		cut   = "."
-		count = 2
-		rsStr = gstr.TrimLeftStr(str, cut, count)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// .abcd..efg...
-}
-
-func ExampleTrimRight() {
-	var (
-		str           = `abcdef    `
-		characterMask = "def" // []byte{"d", "e", "f"}
-		rsStr         = gstr.TrimRight(str, characterMask)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// abc
-}
-
-func ExampleTrimRightStr() {
-	{
-		var (
-			str   = `aaa,bbb,ccc,ddd,eee,`
-			cut   = ","
-			count = 1
-			rsStr = gstr.TrimRightStr(str, cut, count)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str   = `aaa,bbb,ccc,ddd,eee,,,,,`
-			cut   = ","
-			count = -1
-			rsStr = gstr.TrimRightStr(str, cut, count)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str   = `aaa,bbb,ccc,ddd,eee,,,,,   `
-			cut   = ","
-			count = -1
-			rsStr = gstr.TrimRightStr(str, cut, count)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// aaa,bbb,ccc,ddd,eee
-	// aaa,bbb,ccc,ddd,eee
-	// aaa,bbb,ccc,ddd,eee,,,,,
-}
-
-func ExampleTrimStr() {
-	{
-		var (
-			str   = `goframe is Very Nice to-use`
-			cut   = "goframe"
-			rsStr = gstr.TrimStr(str, cut)
-		)
-		fmt.Println(rsStr)
-	}
-	{
-		var (
-			str   = `goframe is Very Nice to-use`
-			cut   = "use"
-			count = -1
-			rsStr = gstr.TrimStr(str, cut, count)
-		)
-		fmt.Println(rsStr)
-	}
-
-	// Output:
-	// is Very Nice to-use
-	// goframe is Very Nice to-
-}
-
-func ExampleUcFirst() {
-	var (
-		s     = `goframe is very nice to use.`
-		rsStr = gstr.UcFirst(s)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// Goframe is very nice to use.
-}
-
-func ExampleUcWords() {
-	var (
-		str   = `goframe is very nice to use.`
-		rsStr = gstr.UcWords(str)
-	)
-	fmt.Println(rsStr)
-
-	// Output:
-	// Goframe Is Very Nice To Use.
-}
-
-func ExampleWordWrap() {
-	{
-		var (
-			str   = `A very long woooooooooooooooooord. and something`
-			width = 8
-			br    = "\n"
-			rsStr = gstr.WordWrap(str, width, br)
-		)
-		fmt.Println(rsStr)
-	}
-
-	{
-		var (
-			str   = `The quick brown fox jumped over the lazy dog.`
-			width = 20
-			br    = "<br />\n"
-			rsStr = gstr.WordWrap(str, width, br)
-		)
-		fmt.Printf("%v", rsStr)
-	}
-
-	// Output:
-	// A very
-	// long
-	// woooooooooooooooooord.
-	// and
-	// something
-	// The quick brown fox<br />
-	// jumped over the lazy<br />
-	// dog.
-}