go

问题 I'm trying to initialize a new go project with go module (using go 1.11). I don't plan to publish it in github or elsewhere, it is just a temporary/test project with only main package. Whenever I try to run go mod init in a directory (that's outside my $GOPATH ), I get this error: go: cannot determine module path for source directory /Users/... (outside GOPATH, no import comments) Is it not possible to init module without using git (or other VCS)? Or is there any workaround? 回答1: Is it not

问题 I'm trying to initialize a new go project with go module (using go 1.11). I don't plan to publish it in github or elsewhere, it is just a temporary/test project with only main package. Whenever I try to run go mod init in a directory (that's outside my $GOPATH ), I get this error: go: cannot determine module path for source directory /Users/... (outside GOPATH, no import comments) Is it not possible to init module without using git (or other VCS)? Or is there any workaround? 回答1: Is it not

问题 I'm trying to initialize a new go project with go module (using go 1.11). I don't plan to publish it in github or elsewhere, it is just a temporary/test project with only main package. Whenever I try to run go mod init in a directory (that's outside my $GOPATH ), I get this error: go: cannot determine module path for source directory /Users/... (outside GOPATH, no import comments) Is it not possible to init module without using git (or other VCS)? Or is there any workaround? 回答1: Is it not

问题 I'm trying to initialize a new go project with go module (using go 1.11). I don't plan to publish it in github or elsewhere, it is just a temporary/test project with only main package. Whenever I try to run go mod init in a directory (that's outside my $GOPATH ), I get this error: go: cannot determine module path for source directory /Users/... (outside GOPATH, no import comments) Is it not possible to init module without using git (or other VCS)? Or is there any workaround? 回答1: Is it not

问题 I am new to Go and I'm building a simple API with it now: package main import ( "encoding/json" "fmt" "github.com/gorilla/mux" "github.com/gorilla/handlers" "log" "net/http" ) func main() { port := ":3000" var router = mux.NewRouter() router.HandleFunc("/m/{msg}", handleMessage).Methods("GET") router.HandleFunc("/n/{num}", handleNumber).Methods("GET") headersOk := handlers.AllowedHeaders([]string{"Authorization"}) originsOk := handlers.AllowedOrigins([]string{"*"}) methodsOk := handlers

问题 I am new to Go and I'm building a simple API with it now: package main import ( "encoding/json" "fmt" "github.com/gorilla/mux" "github.com/gorilla/handlers" "log" "net/http" ) func main() { port := ":3000" var router = mux.NewRouter() router.HandleFunc("/m/{msg}", handleMessage).Methods("GET") router.HandleFunc("/n/{num}", handleNumber).Methods("GET") headersOk := handlers.AllowedHeaders([]string{"Authorization"}) originsOk := handlers.AllowedOrigins([]string{"*"}) methodsOk := handlers

问题 I am new to Go and I'm building a simple API with it now: package main import ( "encoding/json" "fmt" "github.com/gorilla/mux" "github.com/gorilla/handlers" "log" "net/http" ) func main() { port := ":3000" var router = mux.NewRouter() router.HandleFunc("/m/{msg}", handleMessage).Methods("GET") router.HandleFunc("/n/{num}", handleNumber).Methods("GET") headersOk := handlers.AllowedHeaders([]string{"Authorization"}) originsOk := handlers.AllowedOrigins([]string{"*"}) methodsOk := handlers

问题 I have the following code: func Call(ctx context.Context, payload Payload) (Response, error) { req, err := http.NewRequest(...) // Some code that creates request from payload ctx, cancel = context.withTimeout(ctx, time.Duration(3) * time.Second) defer cancel() return http.DefaultClient.Do(req) } What would happen if I didn't put defer cancel() in there? go vet warned this the cancel function returned by context.WithTimeout should be called, not discarded, to avoid a context leak How will the

问题 I have the following code: func Call(ctx context.Context, payload Payload) (Response, error) { req, err := http.NewRequest(...) // Some code that creates request from payload ctx, cancel = context.withTimeout(ctx, time.Duration(3) * time.Second) defer cancel() return http.DefaultClient.Do(req) } What would happen if I didn't put defer cancel() in there? go vet warned this the cancel function returned by context.WithTimeout should be called, not discarded, to avoid a context leak How will the

问题 I have the following code: func Call(ctx context.Context, payload Payload) (Response, error) { req, err := http.NewRequest(...) // Some code that creates request from payload ctx, cancel = context.withTimeout(ctx, time.Duration(3) * time.Second) defer cancel() return http.DefaultClient.Do(req) } What would happen if I didn't put defer cancel() in there? go vet warned this the cancel function returned by context.WithTimeout should be called, not discarded, to avoid a context leak How will the