Programming in Dart: Classes

Jun 28 2022 · Dart 2.17, Flutter 3.0, DartPad

Part 1: Understand Classes

09. Utilize Enumerations

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Before moving forward into the next and final part of this course, we’re going to explore another type that will help clarify your code. They are called enumerations. Often times in programming, you will hear the expression, ‘avoid magic numbers’. Take a look at this code. Here we are checking that the current item is greater than eighteen.

var damageModifiers = [1, 2, 4];
var currentDamageModifier = 0;
var baseDamage = 100;
enum DamageType { regular, twice, quad }
 var currentDamageType = DamageType.twice;
switch (currentDamageType) {
    case DamageType.regular:
        currentDamageModifier = damageModifiers[0];
        break;
    case DamageType.twice:
        currentDamageModifier = damageModifiers[1];
        break;
    case DamageType.quad: 
        currentDamageModifier = damageModifiers[2];
        break;
}
print('You do ${baseDamage * currentDamageModifier } damage');
/**
  switch (currentDamageType) {
    case DamageType.regular:
      damageModifier = damageValues[0];
      break;
    case DamageType.twice:
      damageModifier = damageValues[1];
      break;
    case DamageType.quad: 
      damageModifier = damageValues[2];
      break;
  }
**/
currentDamageModifier = damageModifiers[currentDamageType.index];