Gradual typing

Gradual typing is a programming approach that allows developers to combine both dynamically typed and statically typed code within the same program. This means they can add type annotations to certain parts of the code to catch errors early, while leaving other parts flexible and untyped for faster development or experimentation. The system safely integrates these mixed types, providing the benefits of both approaches—rigor and safety from static typing, and flexibility from dynamic typing—helping programmers create more reliable software without sacrificing agility.