Getter, setter, dan method

Instance method, getter/setter, static, operator override.

Pahami konsepnya

Getter: int get total => poin * 10; dipanggil tanpa kurung. Setter: set poinBaru(int v) => poin = v;. Static method milik class: static int hitung = 0;. Operator override: bool operator ==(Object lain) => nama == (lain as Siswa).nama;

Coba contoh kode

class Suhu {
  double _celsius = 0;

  double get celsius => _celsius;
  set celsius(double v) => _celsius = v;
  double get fahrenheit => _celsius * 9 / 5 + 32;
  set fahrenheit(double f) => _celsius = (f - 32) * 5 / 9;
}

void main() {
  var s = Suhu();
  s.celsius = 25;
  print(s.fahrenheit);  // 77
}

Getter fahrenheit MENGHITUNG dari _celsius — tidak menyimpan nilai sendiri. Setter menerima nilai lalu mengubah _celsius.

Latihan singkat

Uji: getter status → poin >= 70 harus `lulus`.