hack.go 607 B

123456789101112131415161718192021222324252627
  1. package hack
  2. import (
  3. "reflect"
  4. "unsafe"
  5. )
  6. // no copy to change slice to string
  7. // use your own risk
  8. func String(b []byte) (s string) {
  9. pbytes := (*reflect.SliceHeader)(unsafe.Pointer(&b))
  10. pstring := (*reflect.StringHeader)(unsafe.Pointer(&s))
  11. pstring.Data = pbytes.Data
  12. pstring.Len = pbytes.Len
  13. return
  14. }
  15. // no copy to change string to slice
  16. // use your own risk
  17. func Slice(s string) (b []byte) {
  18. pbytes := (*reflect.SliceHeader)(unsafe.Pointer(&b))
  19. pstring := (*reflect.StringHeader)(unsafe.Pointer(&s))
  20. pbytes.Data = pstring.Data
  21. pbytes.Len = pstring.Len
  22. pbytes.Cap = pstring.Len
  23. return
  24. }