04-05 Type Class Overview: Eq, Ord, Enum, Bounded (Introduction to Haskell)
Автор: Well-Typed
Загружено: 2024-06-21
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We provide an overview of the most important type classes, starting with the Eq, Ord, Enum and Bounded classes. We also discuss the concept of superclasses in the context of the Ord class, and we mention the notion of defaulting in the context of the Bounded class.
Course site with self-test questions: https://teaching.well-typed.com/intro...
00:00 Recap: Eq
01:25 Ord
02:29 The compare function and the Ordering type
04:06 Superclasses
06:01 Reimplementing Ord
11:28 Lexicographical ordering
14:28 Enum and list range syntax
19:49 The questionable instance of Enum for Double
21:26 Other Enum methods and syntactic sugar
23:30 Bounded and an initial discussion of defaulting
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