How Can I Effectively Use Multiple Interfaces in Go without Introducing Complexity?

Using Multiple Interfaces in Go

In Go, interfaces are not equivalent to those in other programming languages. They lack inheritance mechanisms, and it is not advisable to utilize them solely for concealing implementation details, as this can lead to problems like the one presented in the question.

Instead, consider using the following approaches:

• Make fields unexported: Exporting a struct while concealing its fields with lowercase names effectively restricts clients' access to internal details.
• Pass pointers to structs: This allows for modification without compromising the immutability of value-type structs.
• Avoid premature interfaces: Declaring interfaces without concrete implementations can lead to unnecessary complexity and hinder usability. Only create interfaces when necessary for supporting multiple implementations.

By adopting these strategies, you can ensure a clean and practical interface design while maintaining encapsulation and safety.

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