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GitHub - nkcmr/async: experimental promises in go1.18 with generics
source link: https://github.com/nkcmr/async
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async go
a prototype of "promises" in go1.18
install
should be just a regular package:
go get -u -v code.nkcmr.net/async@latest
usage
promises abstract away a lot of details about how asynchronous work is handled. so if you need for something to be async, simply us a promise:
import (
"context"
"code.nkcmr.net/async"
)
type MyData struct {/* ... */}
func AsyncFetchData(ctx context.Context, dataID int64) async.Promise[MyData] {
return async.NewPromise(func() (MyData, error) {
/* ... */
return myDataFromRemoteServer, nil
})
}
func DealWithData(ctx context.Context) {
myDataPromise := AsyncFetchData(ctx, 451)
// do other stuff while operation is not settled
// once your ready to wait for data:
myData, err := myDataPromise.Await(ctx)
if err != nil {/* ... */}
}Recommend
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