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hamishknight/gist:2ab42f3e92447bda0e7e572c7e3f9d04

Created October 7, 2016 14:14
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gistfile1.txt
class Foo {}
class Bar : Foo {}
class Baz : Foo {}
// if you remove the Foo type annotation, (bar, baz) is (Bar, Baz) will return true,
// as the compiler can statically check the type.
let bar : Foo = Bar()
let baz : Foo = Baz()
print((bar, baz) is (Bar, Baz)) // false
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