🧑‍💻 OCaml Pattern Matching-powerful OCaml coding tool

Example

let rec sum = function | [] -> 0 | h :: t -> h + sum t

Scenario

This function is used in scenarios where you need to recursively compute the sum of elements in a list. The pattern '[]' matches an empty list returning zero, and 'h :: t' matches a list with head 'h' and tail 't', recursively adding 'h' to the sum of the tail.

Example

let safe_divide x y = match y with | 0 -> None | _ -> Some (x / y)

Scenario

Used to handle potential division by zero errors in calculations. If 'y' is zero, it returns 'None', avoiding a runtime exception; otherwise, it divides 'x' by 'y' and returns 'Some' of the result, showcasing how pattern matching can manage optional values effectively.

Example

let handle_coordinates = function | (0, 0) -> 'Origin' | (x, 0) -> 'X-axis' | (0, y) -> 'Y-axis' | _ -> 'Anywhere'

Scenario

This function categorizes a point in a 2D space based on its coordinates. It uses pattern matching to identify if the point is at the origin, on the X-axis, Y-axis, or anywhere else in the quadrant.