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structのclone

Posted at 2018-01-25

structのclone

logging library zapで利用されているのを見つけました
https://github.com/uber-go/zap/blob/master/logger.go#L251-L253

sample

main.go

   import "github.com/davecgh/go-spew/spew"

   type A struct {
    a string
   }

   func (a *A) clone() *A {
    copy := *a
    return &copy
   }

   func main() {
    org := &A{"hoge"}
    clone := org.clone()

    spew.Dump(org)
    spew.Dump(clone)
   }

output

(*main.A)(0xc42000e280)({
a: (string) (len=4) "hoge"
})
(*main.A)(0xc42000e290)({
a: (string) (len=4) "hoge"
})

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