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Can I safely generify a supertype, or does it affect all subtypes?

April 26, 2017affect generify safely subtypes supertype

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Can I safely generify a supertype, or does it affect all subtypes?

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Yes, we can generify non-generic legacy supertypes without affecting the non-generic legacy subtypes – provided the subtype method’s signature is identical to the erasure of the supertype method’s signature.