A great example of this pattern can be found in how people create middlewares for HTTP servers. In cases where we need to receive an extra dependency we can wrap the function we want to execute in another function that receives the dependency as a parameter, returning a function with the exact signature we need. Very often we need to use functions with a fixed signature as a parameter or a field. package main import ( "fmt" ) func main() Dependency injectionĪnother great use case for this technique is for dependency injection.
The most basic form of function wrapping is passing the function you want to wrap to another function as parameter. Wrapping functions is a very easy and quick way of maintaining single responsibility and decoupling for programs.
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