Public Function vs. Function: What's the Difference and When to Use Each?

In programming, there's no inherent difference between 'public function' and 'function'. These terms are often used in different programming languages or programming paradigms.

1. 'public function' is a common syntax in object-oriented programming languages to declare a public method or function. Public methods are accessible and callable from outside the class. This syntax is typically used within a class.

2. 'function' is a general term used to represent a function or method. It can be used in various programming languages and paradigms, including object-oriented programming and functional programming.

Therefore, the choice of which term to use depends on the programming language and paradigm you're working with. If you're programming in an object-oriented language and need to declare a public method, using 'public function' is suitable. However, if you're programming in other contexts or simply want to refer to a generic function or method, using 'function' is sufficient.