Functions
Go Function Types
Function Types
Go function types define signatures for typed callbacks.
Introduction to Go Function Types
In Go, function types are a powerful feature that allows developers to define the signatures for typed callbacks and functions. Understanding function types is crucial for making the most of Go's capabilities in concurrent programming, callback handling, and more.
Basic Syntax of Function Types
The syntax for declaring a function type in Go involves specifying the input parameters and return types. A function type does not provide a function body; rather, it defines a signature that any function matching this signature can adhere to.
Using Function Types
Once a function type is defined, it can be used to declare variables, pass functions as arguments, and return functions from other functions. This is particularly useful for implementing callback functions.
Function Types as Method Receivers
Function types can also be used as method receivers. This allows you to define methods on function types, enhancing their utility and flexibility.
In this example, the Logger function type has a method Log which takes a string and calls the function itself. This demonstrates the versatility of function types in Go.
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