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Constants ¶
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Variables ¶
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Functions ¶
func Copy ¶
func Copy(dest, src interface{}) error
Copy 浅拷贝
@param dest (1) 如果为nil,将返回error
(2) 必须是指针类型
@param src (1) 如果为nil,将返回error
(2) 指针类型 || 结构体实例
e.g.
b := &Bean{ Id: 666, } src := map[string]interface{}{ "b": false, "tmp": b, } dest := make(map[string]interface{}) if err := copyKit.Copy(&dest, src); err != nil { panic(err) } // {"b":false,"tmp":{"Id":666}} <nil> fmt.Println(jsonKit.MarshalToString(src, jsonKit.WithApi(jsoniter.ConfigCompatibleWithStandardLibrary))) // {"b":false,"tmp":{"Id":666}} <nil> fmt.Println(jsonKit.MarshalToString(dest, jsonKit.WithApi(jsoniter.ConfigCompatibleWithStandardLibrary))) src["b"] = true b.Id = 777 // {"b":true,"tmp":{"Id":777}} <nil> fmt.Println(jsonKit.MarshalToString(src, jsonKit.WithApi(jsoniter.ConfigCompatibleWithStandardLibrary))) // {"b":false,"tmp":{"Id":777}} <nil> fmt.Println(jsonKit.MarshalToString(dest, jsonKit.WithApi(jsoniter.ConfigCompatibleWithStandardLibrary)))
func DeepCopy ¶
DeepCopy 深拷贝
PS: (1) unable to copy unexported fields in a struct (lowercase field names) (2) 不使用 github.com/mohae/deepcopy: 虽然效果一样,但不推荐使用(star少; 最后更新时间2017) (3) 不使用 github.com/jinzhu/copier: 深拷贝有bug,详见"Golang.wps"
@param src 可以为nil(此时将返回: nil, nil)
e.g. 传参为nil的情况
a, err := copyKit.DeepCopy[interface{}](nil) if err != nil { panic(err) } fmt.Println(a) fmt.Println(a == nil) // true b, err := copyKit.DeepCopy[[]int](nil) if err != nil { panic(err) } fmt.Println(b) fmt.Println(b == nil) // true c, err := copyKit.DeepCopy[map[string]interface{}](nil) if err != nil { panic(err) } fmt.Println(c) fmt.Println(c == nil) // true
Types ¶
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