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02-06 Mapping and Filtering (Introduction to Haskell)
Автор: Well-Typed
Загружено: 2024-06-08
Просмотров: 869
Описание:
We define the map and filter functions on lists, two examples of higher-order functions.
Course site with self-test questions: https://teaching.well-typed.com/intro...
00:00 Hiding the Prelude versions of map and filter
00:33 Recap: How map is supposed to work
02:28 Recap: How filter is supposed to work
05:39 Implementing map
10:03 Testing the reimplemented map function
10:58 Implementing filter
13:25 Using a case expression
16:59 Testing the reimplemented filter function
17:24 Using if-then-else
19:39 Using guards
21:51 Comparing the three different approaches to filter
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