Encoding & Serialization (JSON)

Converting structs to JSON and decoding streams with encoding/json.

Real-World Analogy (Mental Model)

“A universal language translator converting living Go objects into text subtitles (JSON) for network transmission.”

Key Concepts & Rules To Remember

`json.Marshal` converts structs to JSON bytes.
`json.Unmarshal` parses JSON bytes into a struct pointer.
`json.NewDecoder` decodes streaming payloads without loading the entire payload into RAM.

Step-by-Step Code

1. Understanding Encoding & Serialization (JSON)

Converting structs to JSON and decoding streams with encoding/json. In Go, encoding & serialization (json) is designed around clarity and high runtime efficiency.

example.goGo 1.24+

type Person struct {
    Name string `json:"name"`
    Age  int    `json:"age,omitempty"`
}
data, _ := json.Marshal(Person{Name: "Gopher", Age: 15})

Common Beginner Pitfalls & Mistakes

Mistake: Misusing encoding & serialization (json) 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 Encoding & Serialization (JSON)?

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