Methods (Receivers)

Attaching functions to user-defined types using value and pointer receivers.

Real-World Analogy (Mental Model)

“Giving a car an accelerator pedal. The method `Car.Accelerate()` belongs to the car type and updates its speedometer.”

Key Concepts & Rules To Remember

Pointer receiver `func (c *Car) Accelerate()` can mutate struct state.
Value receiver `func (c Car) Speed()` operates on a read-only copy.
Methods can be defined on any named type in the same package.

Step-by-Step Code

1. Understanding Methods (Receivers)

Attaching functions to user-defined types using value and pointer receivers. In Go, methods (receivers) is designed around clarity and high runtime efficiency.

example.goGo 1.24+

type User struct { Name string }

func (u *User) SetName(name string) {
    u.Name = name // Mutates caller
}

Common Beginner Pitfalls & Mistakes

Mistake: Misusing methods (receivers) without understanding its memory or concurrency semantics.

✅ Correct Way: Always follow standard Go idioms and verify with tests.

Self Assessment

Knowledge Check

Verify your understanding with these interactive practice questions.

Quizzes

Quick checks for understanding

Multiple-choice with inline explanations—expand to see why.

What is the primary concept behind Methods (Receivers)?

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