bytes
最后更新于：2022-04-02 02:42:22
[TOC]
## 语法
### Func
```
func Compare(a, b []byte) int
func Equal(a, b []byte) bool
func EqualFold(s, t []byte) bool
// Runes函数返回和s等价的\[\]rune切片。（将utf-8编码的unicode码值分别写入单个rune）
func Runes(s []byte) []rune
func HasPrefix(s, prefix []byte) bool
func HasSuffix(s, suffix []byte) bool
func Contains(b, subslice []byte) bool
func Count(s, sep []byte) int
func Index(s, sep []byte) int
func IndexByte(s []byte, c byte) int
func IndexRune(s []byte, r rune) int
func IndexAny(s []byte, chars string) int
func IndexFunc(s []byte, f func(r rune) bool) int
func LastIndex(s, sep []byte) int
func LastIndexAny(s []byte, chars string) int
func LastIndexFunc(s []byte, f func(r rune) bool) int
func Title(s []byte) []byte
func ToLower(s []byte) []byte
func ToLowerSpecial(_case unicode.SpecialCase, s []byte) []byte
func ToUpper(s []byte) []byte
func ToUpperSpecial(_case unicode.SpecialCase, s []byte) []byte
func ToTitle(s []byte) []byte
func ToTitleSpecial(_case unicode.SpecialCase, s []byte) []byte
func Repeat(b []byte, count int) []byte
func Replace(s, old, new []byte, n int) []byte
func Map(mapping func(r rune) rune, s []byte) []byte
func Trim(s []byte, cutset string) []byte
func TrimSpace(s []byte) []byte
func TrimFunc(s []byte, f func(r rune) bool) []byte
func TrimLeft(s []byte, cutset string) []byte
func TrimLeftFunc(s []byte, f func(r rune) bool) []byte
func TrimPrefix(s, prefix []byte) []byte
func TrimRight(s []byte, cutset string) []byte
func TrimRightFunc(s []byte, f func(r rune) bool) []byte
func TrimSuffix(s, suffix []byte) []byte
func Fields(s []byte) [][]byte
func FieldsFunc(s []byte, f func(rune) bool) [][]byte
func Split(s, sep []byte) [][]byte
func SplitN(s, sep []byte, n int) [][]byte
func SplitAfter(s, sep []byte) [][]byte
func SplitAfterN(s, sep []byte, n int) [][]byte
func Join(s [][]byte, sep []byte) []byte
```
### Type
```
type Buffer
func NewBuffer(buf []byte) *Buffer
func NewBufferString(s string) *Buffer
func (b *Buffer) Bytes() []byte
func (b *Buffer) Cap() int
func (b *Buffer) Grow(n int)
func (b *Buffer) Len() int
func (b *Buffer) Next(n int) []byte
func (b *Buffer) Read(p []byte) (n int, err error)
func (b *Buffer) ReadByte() (byte, error)
func (b *Buffer) ReadBytes(delim byte) (line []byte, err error)
func (b *Buffer) ReadFrom(r io.Reader) (n int64, err error)
func (b *Buffer) ReadRune() (r rune, size int, err error)
func (b *Buffer) ReadString(delim byte) (line string, err error)
func (b *Buffer) Reset()
func (b *Buffer) String() string
func (b *Buffer) Truncate(n int)
func (b *Buffer) UnreadByte() error
func (b *Buffer) UnreadRune() error
func (b *Buffer) Write(p []byte) (n int, err error)
func (b *Buffer) WriteByte(c byte) error
func (b *Buffer) WriteRune(r rune) (n int, err error)
func (b *Buffer) WriteString(s string) (n int, err error)
func (b *Buffer) WriteTo(w io.Writer) (n int64, err error)
type Reader
func NewReader(b []byte) *Reader
func (r *Reader) Len() int
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) ReadByte() (byte, error)
func (r *Reader) ReadRune() (ch rune, size int, err error)
func (r *Reader) Reset(b []byte)
func (r *Reader) Seek(offset int64, whence int) (int64, error)
func (r *Reader) Size() int64
func (r *Reader) UnreadByte() error
func (r *Reader) UnreadRune() error
func (r *Reader) WriteTo(w io.Writer) (n int64, err error)
```
## 语法
### bytes.Runes
```
a := []byte("你好啊")
runes := bytes.Runes(a)
fmt.Printf("%q\n", runes) // ['你' '好' '啊']
b := []byte("abc")
fmt.Printf("%v\n", bytes.Runes(b)) // [97 98 99]
```
### 生成 buffer的方式
```
var b bytes.buffer
func NewBuffer(buf []byte) *Buffer
func NewBufferString(s string) *Buffer
```
### WriteTo 指定输出
```
var b bytes.Buffer
b.Write([]byte("hello world"))
b.WriteTo(os.Stdout)
```
### reader 使用
```
b := bytes.NewBufferString("hello world")
io.Copy(os.Stdout,b)
```
## buyes.Reader
```
type Reader
func NewReader(b []byte) *Reader
func (r *Reader) Len() int
func (r *Reader) Read(b []byte) (n int, err error)
func (r *Reader) ReadByte() (b byte, err error)
func (r *Reader) UnreadByte() error
func (r *Reader) ReadRune() (ch rune, size int, err error)
func (r *Reader) UnreadRune() error
func (r *Reader) Seek(offset int64, whence int) (int64, error)
func (r *Reader) ReadAt(b []byte, off int64) (n int, err error)
func (r *Reader) WriteTo(w io.Writer) (n int64, err error)
```
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