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main.go
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main.go
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package main
import (
"fmt"
"sync"
"github.com/konojunya/goroutine-sample/model"
"github.com/konojunya/goroutine-sample/service"
)
func main() {
// アンチパターン
// for _, id := range ids {
// go func(id int) {
// user := service.GetUser(id)
// users = append(users, user)
// }(id)
// }
// まっきsample
/*
userCh := make(chan model.User)
for _, id := range ids {
go func(id int, userCh chan model.User) {
userCh <- service.GetUser(id)
}(id, userCh)
}
for _ = range ids {
user := <-userCh
users = append(users, user)
}
fmt.Println(users)
*/
userCh := make(chan model.UserWithError)
users := make([]model.User, 0)
var wg sync.WaitGroup
for {
ids, next := service.PostTwitterAPI()
for _, id := range ids {
wg.Add(1)
go func(id string) {
user, err := service.GetUserFromTwitter(id)
wg.Done()
userCh <- model.UserWithError{
User: user,
Error: err,
}
}(id)
}
for _ = range ids {
res := <-userCh
users = append(users, res.User)
}
if next {
break
}
}
wg.Wait()
fmt.Println(users)
}