c# nullckeck

Extension.cs

namespace kamiya.util{
	public static class Extensions {
		/// <summary>
		/// targetがnullだった場合はnullを、そうでなければ実行します
		/// </summary>
		/// <typeparam name="T1"></typeparam>
		/// <typeparam name="T2"></typeparam>
		/// <param name="target"></param>
		/// <param name="f">存在した時に実行する関数</param>
		/// <returns></returns>
		public static T2 NullCheck<T1, T2>(this T1 target, Func<T1, T2> f) {
			if (target == null) return default(T2);
			else return f(target);
		}

		public static void NullCheck<T1>(this T1 target, Action<T1> f) {
			if (target == null) return;
			else f(target);
		}
	}
}