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| reverse $ into [] (filtering even . indexingFrom 0) [1..10] | |
| > [(0, 2), (1, 4), (2, 6), (3, 8), (4, 10)] : List (Int, Integer) | |
| reverse $ into [] (indexingFrom 0 . filtering (even . snd)) [1..10] | |
| > [(1, 2), (3, 4), (5, 6), (7, 8), (9, 10)] : List (Int, Integer) |
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