hex
最后更新于：2022-04-02 02:43:31
[TOC]
## Encode / EncodetoString
```
// 方式一
src := []byte("Hello")
encodedStr := hex.EncodeToString(src)
fmt.Printf("%s\n", encodedStr) // 48656c6c6f
// 方式二
dst := make([]byte, hex.EncodedLen(len(src)))
hex.Encode(dst, src)
fmt.Printf("%+v\n", string(dst)) // 48656c6c6f
```
## Decode
```
src := []byte("48656c6c6f20476f7068657221")
dst := make([]byte, hex.DecodedLen(len(src)))
n, err := hex.Decode(dst, src)
if err != nil {
log.Fatal(err)
}
fmt.Printf("%s\n", dst[:n])
```
## DecodeString
```
const s = "48656c6c6f20476f7068657221"
decoded, err := hex.DecodeString(s)
if err != nil {
log.Fatal(err)
}
fmt.Printf("%s\n", decoded) // Hello Gopher!
```
## hex.Dump
```
content := []byte("1234567890abcdefghijk")
fmt.Printf("%s", hex.Dump(content))
// Output:
//00000000 31 32 33 34 35 36 37 38 39 30 61 62 63 64 65 66 |1234567890abcdef|
//00000010 67 68 69 6a 6b |ghijk|
```
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