How to compare to structs in golang but ignore undefined fields

I want to compare 2 structs in golang and consider them equal if all fields with a value are equal while ignoring fields which are undefined in either struct.

Take the following example:

type MyType struct { foo string bar string } func main() { a := MyType{foo: "foo"} b := MyType{foo: "foo", bar: "bar"} c := MyType{foo: "foo", bar: "baz"} }

The goal would be for a to be equal to both b and c, but b and c should not be equal.

Is there a builtin way for making this comparison?