What are function handles in MATLAB?
Updated May 17, 2026
Short answer
Function handles are references to functions that enable dynamic execution and higher-order programming.
Deep explanation
A function handle is a MATLAB datatype that stores a reference to a function rather than executing it immediately. Function handles are created using the @ operator.
They are fundamental in advanced MATLAB programming because they enable:
- Dynamic function invocation
- Callback systems
- Numerical optimization
- Event-driven programming
- Functional programming techniques
Function handles allow developers to pass functions as arguments into other functions. This capability is essential in numerical integration, optimization, GUI callbacks, machine learning workflows, and asynchronous systems.
MATLAB internally treats anonymous functions and standard function references similarly through function handles.
Real-world example
Machine learning frameworks use function handles to dynamically specify activation functions or optimization objectives.
Common mistakes
- Developers often confuse @functionName with functionName(). The former creates a reference, while the latter executes the function immediately.
Follow-up questions
- Why are function handles important?
- Can anonymous functions be used as function handles?
- What are callbacks?