Golang

------------------------------------------------------------strings 包与 bytes 包中的函数用法基本一样，不再赘述。

只对 Replacer 进行说明。------------------------------------------------------------

// 转换func ToUpper(s string) stringfunc ToLower(s string) stringfunc ToTitle(s string) string

func ToUpperSpecial(_case unicode.SpecialCase, s string) stringfunc ToLowerSpecial(_case unicode.SpecialCase, s string) stringfunc ToTitleSpecial(_case unicode.SpecialCase, s string) string

func Title(s string) string

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// 比较

func Compare(a, b string) int

func EqualFold(s, t string) bool

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// 清理

func Trim(s string, cutset string) stringfunc TrimLeft(s string, cutset string) stringfunc TrimRight(s string, cutset string) string

func TrimFunc(s string, f func(rune) bool) stringfunc TrimLeftFunc(s string, f func(rune) bool) stringfunc TrimRightFunc(s string, f func(rune) bool) string

func TrimSpace(s string) string

func TrimPrefix(s, prefix string) stringfunc TrimSuffix(s, suffix string) string

------------------------------// 拆合

func Split(s, sep string) []stringfunc SplitN(s, sep string, n int) []string

func SplitAfter(s, sep string) []stringfunc SplitAfterN(s, sep string, n int) []stringfunc Fields(s string) []stringfunc FieldsFunc(s string, f func(rune) bool) []string

func Join(a []string, sep string) string

func Repeat(s string, count int) string

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// 子串

func HasPrefix(s, prefix string) boolfunc HasSuffix(s, suffix string) bool

func Contains(s, substr string) boolfunc ContainsRune(s string, r rune) boolfunc ContainsAny(s, chars string) bool

func Index(s, sep string) intfunc IndexByte(s string, c byte) intfunc IndexRune(s string, r rune) intfunc IndexAny(s, chars string) intfunc IndexFunc(s string, f func(rune) bool) int

func LastIndex(s, sep string) int

func LastIndexByte(s string, c byte) intfunc LastIndexAny(s, chars string) intfunc LastIndexFunc(s string, f func(rune) bool) intfunc Count(s, sep string) int

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// 替换

func Replace(s, old, new string, n int) string

func Map(mapping func(rune) rune, s string) string

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type Reader struct { ... }

func NewReader(s string) *Reader

func (r *Reader) Read(b []byte) (n int, err error)func (r *Reader) ReadAt(b []byte, off int64) (n int, err error)func (r *Reader) WriteTo(w io.Writer) (n int64, err error)func (r *Reader) Seek(offset int64, whence int) (int64, error)

func (r *Reader) ReadByte() (byte, error)func (r *Reader) UnreadByte() error

func (r *Reader) ReadRune() (ch rune, size int, err error)func (r *Reader) UnreadRune() error

func (r *Reader) Len() intfunc (r *Reader) Size() int64func (r *Reader) Reset(s string)

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type Replacer struct { ... }

// 创建一个替换规则，参数为“查找内容”和“替换内容”的交替形式。// 替换操作会依次将第 1 个字符串替换为第 2 个字符串，将第 3 个字符串// 替换为第 4 个字符串，以此类推。// 替换规则可以同时被多个例程使用。func NewReplacer(oldnew ...string) *Replacer

// 使用替换规则对 s 进行替换并返回结果。func (r *Replacer) Replace(s string) string

// 使用替换规则对 s 进行替换并将结果写入 w。// 返回写入的字节数和遇到的错误。func (r *Replacer) WriteString(w io.Writer, s string) (n int, err error)

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