53 lines
1.1 KiB
Markdown
53 lines
1.1 KiB
Markdown
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### 深拷贝map
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### 方法一 encoding/gob包
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```go
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import "encoding/gob"
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// 需要什么类型的map注册类型就可以
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func DeepCopy(dst, src interface{}) error {
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var buf bytes.Buffer
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gob.Register(map[string]interface{}{})
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gob.Register([]interface{}(nil))
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gob.Register([]map[string]interface{}{})
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if err := gob.NewEncoder(&buf).Encode(src); err != nil {
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return err
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}
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return gob.NewDecoder(bytes.NewBuffer(buf.Bytes())).Decode(dst)
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}
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```
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### 方法二 json 序列化后反序列化
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```go
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func MapDeepCopy(src, dst interface{}) error {
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byteSlice, err := json.Marshal(src)
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if err != nil {
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return err
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}
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return json.Unmarshal(byteSlice, dst)
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}
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```
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### 方法三 循环遍历
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```go
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func DeepCopy(value interface{}) interface{} {
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if valueMap, ok := value.(map[string]interface{}); ok {
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newMap := make(map[string]interface{})
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for k, v := range valueMap {
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newMap[k] = DeepCopy(v)
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}
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return newMap
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} else if valueSlice, ok := value.([]interface{}); ok {
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newSlice := make([]interface{}, len(valueSlice))
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for k, v := range valueSlice {
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newSlice[k] = DeepCopy(v)
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}
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return newSlice
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}
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return value
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}
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```
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