Bartosz Milewski Category Theory Lectures → 3.1 Examples of categories, orders, monoids →
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Typing

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Types in category of types #card #bidirectional

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corresponds to strong typing in programming

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to compose two functions, the result of the first function has to be the same type as the input of the second function

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Types in a monoid #card #bidirectional

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any two functions are composable

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corresponds to weak typing

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