ILSpy/ICSharpCode.Decompiler/Util/CollectionExtensions.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ICSharpCode.Decompiler
{
	static class CollectionExtensions
	{
		public static T PopOrDefault<T>(this Stack<T> stack)
		{
			if (stack.Count == 0)
				return default(T);
			return stack.Pop();
		}
		
		public static T PeekOrDefault<T>(this Stack<T> stack)
		{
			if (stack.Count == 0)
				return default(T);
			return stack.Pop();
		}
		
		public static void AddRange<T>(this ICollection<T> collection, IEnumerable<T> input)
		{
			foreach (T item in input)
				collection.Add(item);
		}
	}
}