Function ExampleReadMap_struct

msgp/iter_test.go:195–221

Example: map roundtrip with struct values using WriteMapSorted/ReadMap. Uses testDec as the value type and sorts keys for deterministic output. Employs EncoderTo for values and DecoderFrom for values when reading.

()

// Uses testDec as the value type and sorts keys for deterministic output.
// Employs EncoderTo for values and DecoderFrom for values when reading.
func ExampleReadMap_struct() {
	var buf bytes.Buffer
	w := NewWriter(&buf)

	in := map[string]testDec{
		"a": {A: 1, B: "x"},
		"b": {A: 2, B: "y"},
	}
	// Write map[string]testDec using sorted keys for stable example output.
	_ = WriteMapSorted(w, in, w.WriteString, EncoderTo(w, testDec{}))
	_ = w.Flush()

	r := NewReader(&buf)
	seq, done := ReadMap(r, r.ReadString, DecoderFrom(r, testDec{}))

	seq(func(k string, v testDec) bool {
		fmt.Printf("%s=%d,%s\n", k, v.A, v.B)
		return true
	})
	if err := done(); err != nil {
		fmt.Println("err:", err)
	}

	// Output:
	// a=1,x
	// b=2,y
}

// Example: slice roundtrip with struct elements in a byte slice using AppendArray/ReadArrayBytes.
// Uses testDec as the element type, with EncoderToBytes/DecoderFromBytes helpers.