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Learn Dart: The First Step to Flutter

Solution: Equipment Depreciation Tracker

Understand how to implement an equipment depreciation tracker using Dart's nested recursive functions. Learn to encapsulate logic within scope, apply recursion for iterative calculations, and output the final asset depreciation effectively.

We'll cover the following...
Dart
double calculateDepreciation(double initialValue, int years) {
  
  double applyDepreciation(double currentValue, int yearsLeft) {
    if (yearsLeft <= 0) {
      return currentValue;
    } else {
      return applyDepreciation(currentValue * 0.90, yearsLeft - 1);
    }
  }
  
  return applyDepreciation(initialValue, years);
}
void main() {
  double truckValue = 50000.0;
  int yearsUsed = 3;
  double currentValue = calculateDepreciation(truckValue, yearsUsed);
  print(currentValue);
}

Solution explanation

In the main.dart file:

  • Line 1: We define the outer function to act as the public interface for our calculation, ...