Sorting and Duplicate Removal
The most basic sorting function is sort, which can sort by either the default comparator or a custom comparator if desired. For instance, this gets the first five planet names in alphabetical order:
| | (take 5 (sort (map (:name planets)))) |
In this example, we’re retrieving the planet names, then sorting those names. Often, though, you want the original entities sorted by the planet’s name. That is, you want to sort by a function applied to each element rather than extracting the value. This can be accomplished with sort-by:
| | (take 5 (sort-by :name planets)) |
Both sort and sort-by require materialization of their outputs so don’t return lazy sequences. Neither has a transducer version.
To retrieve the smallest ...
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