3 ms·
Example from the docs: // pill.go package painkiller //go:generate stringer -type=Pill type Pill int const ( Placebo Pill = iot
by dastx 6y ago
Example from the docs:
// pill.go
package painkiller
//go:generate stringer -type=Pill
type Pill int
const (
Placebo Pill = iota
Aspirin
Ibuprofen
Paracetamol
Acetaminophen = Paracetamol
)
Then running `go generate` will yield:
$ cat pill_string.go
// Code generated by "stringer -type=Pill"; DO NOT EDIT.
package painkiller
import "strconv"
func _() {
// An "invalid array index" compiler error signifies that the constant values have changed.
// Re-run the stringer command to generate them again.
var x [1]struct{}
_ = x[Placebo-0]
_ = x[Aspirin-1]
_ = x[Ibuprofen-2]
_ = x[Paracetamol-3]
}
const _Pill_name = "PlaceboAspirinIbuprofenParacetamol"
var _Pill_index = [...]uint8{0, 7, 14, 23, 34}
func (i Pill) String() string {
if i < 0 || i >= Pill(len(_Pill_index)-1) {
return "Pill(" + strconv.FormatInt(int64(i), 10) + ")"
}
return _Pill_name[_Pill_index[i]:_Pill_index[i+1]]
}
Note: indentation is messing up because of Hacker News, so ignore the indentation.