go-interfaces
Go Interfaces and Composition
Available Scripts
scripts/check-interface-compliance.sh— Finds exported interfaces missing compile-time compliance checks (var _ I = (*T)(nil)). Runbash scripts/check-interface-compliance.sh --helpfor options.
Accept Interfaces, Return Concrete Types
Interfaces belong in the package that consumes values, not the package that implements them. Return concrete (usually pointer or struct) types from constructors so new methods can be added without refactoring.
// Good: consumer defines the interface it needs
package consumer
type Thinger interface { Thing() bool }
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