在Go Lang中重复导入

Question

In the scenario where I import this :

import (
      "fmt"
      "github.com/julienschmidt/httprouter"
      "net/http"
      "log"
      )

But httprouter/router.go imports :

import (
        "net/http"
)

do I still need to import "net/http" in my go file?

Answer 1

Your files only need to be concerned with which imports are used within that specific file.

You can try using goimports to see how it suggests things to be imported. Effective Go has this to say:

When a package is imported, the package name becomes an accessor for the contents. After import "bytes" the importing package can talk about bytes.Buffer.

which, pedantically, is not entirely correct as you can have multiple files in the same package and each needs to import whatever it requires (eg, 2 files in a package might each import fmt