Function Handles. Variables that allow you to invoke a function indirectly. A function handle is a data type that stores an association to a function. For example, you can use a function handle to construct anonymous functions or specify call back functions.Also, you can use a function handle to pass a function to another function, or call local functions from outside the main function.To get started, see Create Function Handle.or example, you can use a function handle to construct anonymous functions or specify call back functions. Also, you can use a function handle to pass a function to another function, or call local functions from outside the main function. To get started, see Create Function Handle.