How to Choose Effective Interface and Receiver Names in Go?

Interface Naming Conventions in Go

When creating interfaces in Go, it's essential to follow established naming conventions to enhance readability and maintain consistency within your codebase.

One common convention is to use an "er" suffix for interfaces that specify a single method. For example, interfaces like Reader, Writer, and Formatter adhere to this rule.

For interfaces with multiple methods, it's recommended to choose a name that accurately describes their purpose. Examples include net.Conn (for network connections), http.ResponseWriter (for HTTP responses), and io.ReadWriter (for both reading and writing).

When naming receiver objects, it's advised to avoid generic terms like this or self. Instead, use abbreviations that reflect the receiver type, such as c for Client or sh for serverHandler.

Consider the following example:

type Role string

type RolesHierarchy []Role

// IsRole verifies if a role is within the hierarchy.
func (r Role) IsRole(role Role, hierarchy RolesHierarchy) bool {
    // ... Implementation ...
}

// AssumeRole sets the role in the session.
func (r *Role) AssumeRole(session ServerSession, role Role) {
    // ... Implementation ...
}

Based on the suggested conventions, suitable interface and receiver names for the above code could be:

• Interface: RoleChecker or RoleVerifier
• Receiver: r or role

Alternatively, if merging both functionalities into a single interface is preferred, a suitable name could be RoleManager.

Remember, consistency is key in naming interfaces and receivers. Choose names that are clear, descriptive, and adhere to the conventions outlined above. This will improve the readability and maintainability of your Go code.

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