英文:
Golang: compile error when trying to delete an item in map
问题
我正在尝试从Golang的map中删除一个项目。
以下是代码的大致思路：
import ("github.com/aws/aws-sdk-go/aws/session")var sessions map[string]*session.Sessiontype config struct {...endPoint string...}func newConfig() config {var Config config = config{endPoint: "myEndpoint"}return Config}func createSession(Config *config) error {...sessions = make(map[string]*session.Session)...session, err := session.NewSession(<session info here>)sessions[Config.endPoint] = session...}func main() {Config := newConfig()err := createSession()...if <some condition where i want to delete the session> {delete(sessions, Config.endPoint)}}
然而，我遇到了这个编译错误：
# ./build_my_program.sh./myprogram.go:9998:12: cannot use sessions (type map[string]*session.Session) as type *config in argument to delete./myprogram.go:9999:29: cannot use Config.endPoint (type string) as type *session.Session in argument to delete
我不明白这里的问题。
唯一让我怀疑的是在map中使用指针作为类型。假设我需要保持指针类型，有没有解决方法？
英文:
I'm trying to delete an item from a map in Golang.
Here's a rough idea of the code:
import ("github.com/aws/aws-sdk-go/aws/session")var sessions map[string]*session.Sessiontype config struct {...endPoint string...}func newConfig() config {var Config config = config{endPoint: "myEndpoint"}return Config}func createSession(Config *config) error {...sessions = make(map[string]*session.Session)...session, err := session.NewSession( <session info here> )sessions[Config.endPoint] = session...}func main() {Config := newConfig()err := createSession()...if <some condition where i want to delete the session> {delete(sessions, Config.endPoint)}}
However I'm getting this compile error:
# ./build_my_program.sh./myprogram.go:9998:12: cannot use sessions (type map[string]*session.Session) as type *config in argument to delete./myprogram.go:9999:29: cannot use Config.endPoint (type string) as type *session.Session in argument to delete
I don't understand the problem here.
The only thing which makes me suspicious here is the use of pointers as a type in the map. Supposing I need to keep the pointers type, any idea on how to resolve?
答案1
得分: 1
内置的 delete 函数被包中的 func delete(*config, *session.Session) {} 遮蔽了。请将包中的函数重命名。
英文:
The built in delete function is shadowed by func delete(*config, *session.Session) {} in the package. Rename the function in the package.
答案2
得分: 0
你在哪里声明了一个 delete 函数？
package mainfunc delete(a, b string) {}func main() {m := map[int]int{}m[1] = 1delete(m, 1)}
./del.go:9:8: 无法将 m (类型为 map[int]int) 作为 delete 函数的字符串参数使用./del.go:9:12: 无法将 1 (类型为未指定类型的整数) 作为 delete 函数的字符串参数使用
英文:
Where did you delcared a delete func ?
package mainfunc delete(a, b string) {}func main() {m := map[int]int{}m[1] = 1delete(m, 1)}
./del.go:9:8: cannot use m (type map[int]int) as type string in argument to delete./del.go:9:12: cannot use 1 (type untyped int) as type string in argument to delete
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