ansu_ui/lib/extension/list_extension.dart

import 'package:flutter/material.dart';
import 'package:ansu_ui/extension/num_extension.dart';

extension SeparateExt on List<Widget>? {
  List<Widget>? sepWidget({Widget? separate}) {
    if (this == null) return null;
    if (this!.isEmpty) return [];
    return List.generate(this!.length * 2 - 1, (index) {
      if (index.isEven)
        return this![index ~/ 2];
      else
        return separate ?? 10.wb;
    });
  }
}