What are the differences between C++ templates and macros?

What are the differences between C++ templates and macros?

C++ templates are a feature that allows functions and classes to operate with generic types, while macros are preprocessor directives that perform text substitution before compilation.

Can you give me an example of when to use templates instead of macros?

Sure! Use templates when you need type safety and code reusability, like creating a generic function for sorting different data types.

What are the advantages of using templates over macros?

Templates provide type checking, better error messages, and are more flexible, while macros can lead to code bloat and harder debugging.

Are there any performance differences between using templates and macros?

Templates can lead to code bloat if overused, but they often result in optimized code due to inlining. Macros may not be as optimized since they are expanded at compile time.

Can you summarize when I should use each?

Use templates for type-safe, reusable code and macros for simple, repetitive tasks that don't require type checking.