function
boot.janet on line 967 , 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}]