Explicitly mention that `sort-by` sorts a list in place.
a)
(defn sort
- ``Sort `ind` in-place, and return it. Uses quick-sort and is not a stable sort.
+ ``Sorts `ind` in-place, and returns it. Uses quick-sort and is not a stable sort.
If a `before?` comparator function is provided, sorts elements using that,
otherwise uses `<`.``
[ind &opt before?]
(sort-help ind 0 (- (length ind) 1) (or before? <)))
(defn sort-by
- ``Returns `ind` sorted by calling
- a function `f` on each element and comparing the result with `<`.``
+ ``Sorts `ind` in-place by calling a function `f` on each element and
+ comparing the result with `<`.``
[f ind]
(sort ind (fn [x y] (< (f x) (f y)))))
