IterableExtension

iterable_extension.dart

import 'package:flutter/widgets.dart';

extension IterableExtension on Iterable<Widget> {
  // This extension method generates a new Iterable of Widgets that inserts
  // a given separator between each element in the original Iterable.
  Iterable<Widget> separatedBy(Widget separator) sync* {
    bool isFirst = true;
    for (final widget in this) {
      if (!isFirst) yield separator;
      yield widget;
      isFirst = false;
    }
  }
}


// Example:
Row(
  children: [
    const Text('XXX', style: TextStyle(color: Colors.white)),
    const Text('XXX', style: TextStyle(color: Colors.white)),
    const Text('XXX', style: TextStyle(color: Colors.white)),
    const Text('XXX', style: TextStyle(color: Colors.white)),
    const Text('XXX', style: TextStyle(color: Colors.white)),
  ].separatedBy(const SizedBox(width: 20.0)).toList(),
),