What is an Interface | Complete guide to Interface in Go/Golang

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- In general, an interface is a device or a system that unrelated entities use to interact.
- Interfaces are named collections of method signatures.
- EMPTY INTERFACE- When an interface has zero methods, it is called an empty interface. This is represented by interface{}. Since the empty interface has zero methods, all types implement this interface implicitly.
- TYPE ASSERTION- We can find out the underlying dynamic value of an interface using the syntax i.(Type) where i is a variable of type interface and Type is a type that implements the interface.
- EMBEDDING- In Go, an interface cannot implement other interfaces or extend them, but we can create a new interface by merging two or more interfaces.
- a method with pointer or value receiver can be called on both value and pointer and the conversion from value to a pointer or pointer to a value suitable to be passed as a receiver for the method call is done by Go under the hood.