using System;
using System.Linq;
using System.Collections.Generic;

namespace Flowchart
{
    static class CollectionHelper
	{
		public static void RemoveRange<T>(this ICollection<T> source, Func<T, bool> predicate)
		{
			var arr = source.Where(p => predicate(p)).ToArray();
			foreach (var t in arr)
            {
				source.Remove(t);
			}
		}
	}
}