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Discussion on: Polymorphism for Go slices

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peppy profile image
Peppy Sisay •

Creative approach!

Another way is to type the slices as a list of Elements.

elements := []Element{
    MyCustomStruct1{prop1: "foo", prop2:"bar"},
    MyCustomStruct1{prop1: "foo1", prop2:"bar1"},
}
elements2 := []Element{
    MyCustomStruct2{"foo"},
    MyCustomStruct2{"bar"},
}
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func printElementList(elements []Element) {
    for _, e := range elements {
        fmt.Println(e.toString())
    }
}
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play.golang.org/p/qdbRJ1Kq_Kq

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vicentdev profile image
Vicent •

Wow, yes, I think I tried to use polymorphism on the wrong way. The problem I see with that implementation is the elements in the slice can be another type that implements the same interface.