function
boot.janet on line 848, column 1
(sort-by f ind)
Sorts `ind` in-place by calling a function `f` on each element and
comparing the result with `<`.
(sort-by
(fn [x] (get x :b))
@[{:a 1 :b 100} {:a 100 :b 1} {:a -1 :b 50}])
# -> @[{:a 100 :b 1} {:a -1 :b 50} {:a 1 :b 100}]