Go (Golang) Functional Options Pattern

Go (Golang) Functional Option Design Pattern

The Functional Options pattern is pretty useful when building Go packages that need to be configured with different and varying configuration options. One of the ways you could configure that is by using a Config struct or some other pre-defined package level structs. Although that works it’s not as elegant and robust as the Functional Option pattern which allows you to build countless extensions to your package functionality without breaking its public APIs (method definition and interfaces)

Source Code – https://play.golang.org/p/hWoIPrpgqeE

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