GoToSocial/vendor/codeberg.org/gruf/go-structr/util.go
kim b93087ceb4
[chore] update go-structr and go-mangler to no longer rely on modern-go/reflect2 (#3026)
* updates go-structr and go-mangler to no longer rely on modern-go/reflect2 (*phew* now we're go1.23 safe)

* update go-structr version

* bump go-structr to improve memory usage (v. slightly) in certain conditions
2024-06-21 16:43:17 +01:00

22 lines
374 B
Go

package structr
import "unsafe"
// once only executes 'fn' once.
func once(fn func()) func() {
var once int32
return func() {
if once != 0 {
return
}
once = 1
fn()
}
}
// eface_data returns the data ptr from an empty interface.
func eface_data(a any) unsafe.Pointer {
type eface struct{ _, data unsafe.Pointer }
return (*eface)(unsafe.Pointer(&a)).data
}