Please answer using ML, thank you in advance for the help!
14. Write a function count_occurrences of type string list -> exn -> (string * int) list. If the string list argument is sorted (using OCaml's built-in comparison operator, (json list) -> string list (the parentheses in this type are optional, so the REPL won't print them). For any object in the json list that has a field available via the given access path (string list), and has contents that are a JSON string (e.g., String "hi") put the contents string (e.g., "hi") in the output list (order does not matter; the output should have duplicates when appropriate). Sample solution is 6 lines thanks to dots. 16. Write a function filter_access_path_value of type string list -> string -> json list -> json list. The output should be a subset of the third argument, containing exactly those elements of the input list that have a field available via the given access path, and that field's contents are a JSON string equal to the second argument. Sample solution uses dots and is less than 10 lines. 17. Some of the bus data uses latitude and longitude positions to describe the location of vehicles in real time. To narrow our focus onto a particular geographical area, we will use the record types rect and point, which represent a rectangle and a point, respectively. The types are defined in the starter code, but copied here for completeness. type rect { min_latitude: float; max_latitude: float; min_longitude: float; max_longitude: float } { latitude: float; longitude: float } type point Write a function in_rect of type rect -> point -> bool that determines whether a given point falls inside a given rectangle (inclusive). Solution is two lines and uses a lot of conjunction (&&). 14. Write a function count_occurrences of type string list -> exn -> (string * int) list. If the string list argument is sorted (using OCaml's built-in comparison operator, (json list) -> string list (the parentheses in this type are optional, so the REPL won't print them). For any object in the json list that has a field available via the given access path (string list), and has contents that are a JSON string (e.g., String "hi") put the contents string (e.g., "hi") in the output list (order does not matter; the output should have duplicates when appropriate). Sample solution is 6 lines thanks to dots. 16. Write a function filter_access_path_value of type string list -> string -> json list -> json list. The output should be a subset of the third argument, containing exactly those elements of the input list that have a field available via the given access path, and that field's contents are a JSON string equal to the second argument. Sample solution uses dots and is less than 10 lines. 17. Some of the bus data uses latitude and longitude positions to describe the location of vehicles in real time. To narrow our focus onto a particular geographical area, we will use the record types rect and point, which represent a rectangle and a point, respectively. The types are defined in the starter code, but copied here for completeness. type rect { min_latitude: float; max_latitude: float; min_longitude: float; max_longitude: float } { latitude: float; longitude: float } type point Write a function in_rect of type rect -> point -> bool that determines whether a given point falls inside a given rectangle (inclusive). Solution is two lines and uses a lot of conjunction (&&)
