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1. Design Patterns in Python for the Un... Design Patterns in Python for the Untrained Eye

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   # Exercises from PyCon 2019 workshop 

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   # https://www.youtube.com/watch?v=o1FZ_Bd4DSM

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   from abc import ABC, abstractmethod

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2. Array.diff https://www.codewars.com/... Array.diff https://www.codewars.com/kata/523f5d21c841566fde000009

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   use::std::collections::HashSet;

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   fn array_diff<T: Eq + std::hash::Hash + Clone>(a: Vec<T>, b: Vec<T>) -> Vec<T> {

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       let b_hash_set: HashSet<T> = b.into_iter().collect();

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       let mut c: Vec<T> = a.clone();

3. Spinning Words https://www.codewars.... Spinning Words https://www.codewars.com/kata/5264d2b162488dc400000001

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   conditionalReverse :: Bool -> String -> String

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   conditionalReverse b s

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      | b = reverse s

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      | otherwise = s

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