go - Golang concurrency: how to append to the same slice from different goroutines -

i have concurrent goroutines want append (pointer a) struct same slice. how write in go make concurrency-safe?

this concurrency-unsafe code, using wait group:

var wg sync.waitgroup myslice = make([]*mystruct) _, param := range params {     wg.add(1)     go func(param string) {         defer wg.done()         oneofmystructs := getmystruct(param)         myslice = append(myslice, &oneofmystructs)     }(param) } wg.wait() 

i guess need use go channels concurrency-safety. can contribute example?

there nothing wrong guarding myslice = append(myslice, &oneofmystructs) sync.mutex. of course can have result channel buffer size len(params) goroutines send answers , once work finished collect result channel.

if params has fixed size:

myslice = make([]*mystruct, len(params)) i, param := range params {     wg.add(1)     go func(i int, param string) {          defer wg.done()          oneofmystructs := getmystruct(param)          myslice[i] = &oneofmystructs      }(i, param) } 

as goroutines write different memory isn't racy.