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No instanceof #3

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adius opened this issue Dec 2, 2016 · 0 comments
Open

No instanceof #3

adius opened this issue Dec 2, 2016 · 0 comments

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@adius
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adius commented Dec 2, 2016

Never write thing instanceof Thing.
Always use duck typing to check if the thing has the properties/methods you need!
(… or Thing.isThing())
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@adius