How do I call a function from an external package in Go?

Calling a Function from an External Package in Go

When working with modular programs in Go, you may encounter scenarios where you need to invoke functions defined in a separate package. This article demonstrates how to effectively achieve this inter-package communication in Go.

To establish communication between packages, the first step is to import the external package. This is done using the import statement, specifying the package's import path. In your case, you've already imported the functions package in main.go.

The next step is to reference the specific function you want to call from the external package. Functions marked with a capital letter are considered exported and can be accessed from other packages. In your case, the GetValue function in the functions package seems to be exported.

To invoke the function, use the package name followed by the function name. In your main.go file, you can invoke it as follows:

func main() {
    c := functions.GetValue()
}

By following these steps, you can import and call functions from another package in Go, enabling you to work with modular and reusable code components.

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