Recursive Types for Function Definitions
Recursive types are not limited to data structures; they can also be used in function definitions to describe functions that return a value of their own type, enabling complex, self-referential algorithms.
Syntax:
type RecursiveFunction = () => RecursiveFunction;
Example: The recursiveFunction to demonstrates a simplistic conditional check to decide between ending the recursion (returning null) or continuing it by returning a reference to itself.
Javascript
type RecursiveFunction = () => RecursiveFunction | null;const recursiveFunction: RecursiveFunction = (): RecursiveFunction | null => { // A condition that determines whether // to return another recursive call or null const stopCondition = true; // This should be based on actual logic if (stopCondition) { return null; // Base case: ends the recursion } else { // Recursive case: returns itself for further execution return recursiveFunction; }};console.log(recursiveFunction()); |
Output
[LOG] : null
What are Recursive Types & Interfaces in TypeScript ?
In TypeScript, recursive types and interfaces are used to define types or interfaces that can refer to themselves in their definition. This is a powerful concept that allows you to describe complex, nested structures with a simple, elegant definition.
Table of Content
- Recursive Interfaces
- Recursive Type Aliases
- Using Recursive Types with Generics
- Recursive Types for Function Definitions