This package is meant to make copying of structs to/from others structs a bit easier.
Nested structures, embedded types, pointers, sql null types are supported.
go get -u github.com/gotidy/copytype Person struct {
Name string
MiddleName *string
Surname string
}
type User struct {
Person
Email string
Age int8
Married bool
}
type Employee struct {
Name string
MiddleName string
Surname string
Email string
Age int
}
src := User{
Person: Person{
Name: "John",
MiddleName: nil,
Surname: "Smith",
},
Email: "[email protected]",
Age: 33,
Married: false,
}
dst := Employee{}
copiers := copy.New() // New("json")
copiers.Copy(&dst, &src)
// Or more fast use case is to create the type specific copier.
copier := copiers.Get(&Employee{}, &User{}) // Created once for a pair of types.
copier.Copy(&dst, &src)Benchmarks source code can be found here
go test -bench=. -benchmem ./...
goos: darwin
goarch: amd64
pkg: github.com/gotidy/copy-bench
BenchmarkManualCopy-12 177310519 6.92 ns/op 0 B/op 0 allocs/op
BenchmarkCopiers-12 13476417 84.1 ns/op 0 B/op 0 allocs/op
BenchmarkCopier-12 40226689 27.5 ns/op 0 B/op 0 allocs/op
BenchmarkJinzhuCopier-12 407480 2711 ns/op 2480 B/op 34 allocs/op
BenchmarkDeepcopier-12 262836 4346 ns/op 4032 B/op 73 allocs/op
PASS
ok github.com/gotidy/copy-bench 6.922sSee the documentation for more information.