add return values

Author: rwtolbert

examples/eachk.janet

@@ -1,13 +1,13 @@
 # keys for tuple/array are 0-based index
 # prints 0 1 2 3 4
-(eachk i [:a :b :c :d :e] (prin i " "))
+(eachk i [:a :b :c :d :e] (prin i " ")) # -> nil
 
 # prints 0 1 2 3 4
-(eachk i @["a" "b" "c" "d" "e"] (prin i " "))
+(eachk i @["a" "b" "c" "d" "e"] (prin i " ")) # -> nil
 
 # prints keys in table/struct in an unspecified order
 # prints :b :a
-(eachk k {:a 1 :b 2} (prinf "%v " k))
+(eachk k {:a 1 :b 2} (prinf "%v " k)) # -> nil
 
 # prints :foo :bar
-(eachk k @{:foo "A" :bar "B"} (prinf "%v " k))
+(eachk k @{:foo "A" :bar "B"} (prinf "%v " k)) # -> nil