无法传播数组以作为多个参数传递

Question

I have this:

methods := [...]string{"POST", "PUT"}
router.HandleFunc(h.makeRegisterNewUser("/api/v1/register", v)).Methods("POST", "PUT")

that works except methods is unused. If I try this:

methods := [...]string{"POST", "PUT"}
router.HandleFunc(h.makeRegisterNewUser("/api/v1/register", v)).Methods(methods...)

I get this error:

cannot use methods (type [2]string) as type []string in argument to router.HandleFunc(h.makeRegisterNewUser("/api/v1/register", v)).Methods

I can't figure this one out

Answer 1

You don't need the ... in methods := [...]string{"POST", "PUT"}

 methods := []string{"POST", "PUT"}

Edit: Arrays are slightly different from slices. The [...] notation creates an array while a variadic function like Methods() accepts a slice. If you really need an array you can take a slice of it using [:]:

router.HandleFunc(h.makeRegisterNewUser("/api/v1/register", v)).Methods(methods[:]...)