在Go中访问struct属性[重复]

Question

This question already has an answer here:

• How to clone a structure with unexported field? 1 answer

Now I’ve struct which implements this interface like following

type MyRunner struct {
    path string
}

func (r MyRunner) soSomthing(newPath string) error {
    run(path)
    return nil
}

Now I want to create the object and I got error implicit assignment of unexported field 'path' in MyRunner literal

This is how I do it

&run.MyRunnter{”a/b/c/“}

is there a way to do it without the New keyword in Go ?

</div>

Answer 1

In Go every field starting with lower case letter is considered private and is accessible only within its package. Simply change the name to Path.

type MyRunner struct {
    Path string
}

This rule applies to other identifiers in Go: type names, function names. See Exported identifiers on documenation.

If you don't want to make the field public. Write a funciton that will act as a constructor.

type MyRunner struct {
    path string
}

func NewMyRunner(path string) *MyRunner {
    return &MyRunner{path}
}

Example from standard library container.list.New