I'm giving a try to golang embedding and the following code doesn't compile:
type Parent struct {}
func (p *Parent) Foo() {
}
type Child struct {
p *Parent
}
func main() {
var c Child
c.Foo()
}
with
./tmp2.go:18:3: c.Foo undefined (type Child has no field or method Foo)
What I am doing wrong?
When you are writing:
type Child struct {
p *Parent
}
You aren't embedding Parent, you just declare some instance var p of type *Parent.
To call p methods you must forward the call to p
func (c *Child) Foo() {
c.p.Foo()
}
By embedding you can avoid this bookkeeping, and the syntax will be
type Child struct {
*Parent
}
Child should not embed Parent. it might be the wrong choice of words, I'll edit. Thanks*Parent as OP may have been trying to do in the question. The embedding delegation is not restricted to "public" or exported methods and fields. We don't know the context where OP is using Parent and Child, so it's impossible to know if embedding does or does not make sense for the OP.You either have to call
c.p.Foo()
or change Child struct to this :
type Child struct {
*Parent
}
