In Go, functions are essential for structuring code, and they come in two types: named functions and anonymous functions. Understanding the difference between them is crucial for writing clean and efficient Go programs.
Named functions are defined with an explicit name and are typically used for structured, reusable code.
func
keyword followed by a name.Output:
Anonymous functions (also called lambda functions or function literals) do not have a name and are often used for short-lived operations or when passing functions as arguments.
Output:
Output:
Feature | Named Functions | Anonymous Functions |
---|---|---|
Definition | Declared with a name. | No name, assigned to variables or used inline. |
Reusability | Can be reused multiple times. | Typically used once or within a scope. |
Use Case | General-purpose functions. | Closures, inline processing, and callback functions. |
Method Binding | Can be used as methods for structs. | Cannot be directly used as methods. |
Both named and anonymous functions in Go serve different purposes. Named functions are great for modular, reusable code, while anonymous functions are useful for closures, callbacks, and short-lived operations. Choosing the right type depends on your use case and the readability of your code.