dart iterators , scopes and functional programming

scopes.dart

import 'dart:math' as Math;

void main() {
//   List<int> x = [1,2,3,4];

  var numbers = Iterable.generate(10000, (i) => i);

  print(numbers.reduce(Math.min));
  print(numbers.reduce(Math.max));

//   Map type is a associative data type!

  Map<int, int> maps = Map.fromIterable(
    numbers.take(10),
  );

  print(maps.map(
    (int k, int v) => MapEntry(k, k + v),
  ));

  ///most powerful function on list are
//   numbers.reduce();
//   numbers.map();
//   numbers.where();

//   num sum = 0;

//   for (var x in numbers) {
//     sum += x;
//   }

//   print(sum);
//   print("--------");
//   print("  ");
//   print("from reduce method:");

//   print(numbers.reduce((prev,i) => prev + i));

//   print(numbers.first);
//   print(numbers.last);

//   List<int> newNum = numbers.skip(4).toList();
//   print(newNum);

  /// when using takeWhile(), it will stop on the first encounter of false.
//   print(
//     numbers.takeWhile((n) => n < 10).toList(),
//   );

//   List<num> klist = numbers.toList();
//   Set<num> sSet = numbers.toSet();
//   String str = numbers.toString();

//   print("original");
//   print(numbers);
//   print(numbers.runtimeType);
//   print("--------");
//   print("   ");

//   print(klist.runtimeType);
//   print(sSet.runtimeType);
//   print(str.runtimeType);
}