playground.mojo

struct DemoStruct(CollectionElement, Stringable):
    var value: String

    fn __init__(inout self, value: String) -> None:
        self.value = value
        print("Called __init__ for", str(self))

    fn __moveinit__(inout self, owned existing: Self) -> None:
        self.value = existing.value ^
        print("Called __moveinit__ for", str(self))

    fn __copyinit__(inout self, existing: Self) -> None:
        self.value = existing.value
        print("Called __copyinit__ for", str(self))

    fn __del__(owned self) -> None:
        print("Called __del__ for", str(self))

    fn __str__(self) -> String:
        return 'DemoStruct(String("' + self.value + '"))'


fn bar(owned foo: DemoStruct):
    print("Called bar with argument:", str(foo))


fn main():
    var foo = DemoStruct(String("foo"))
    bar(foo)
    print(foo)