Fan.Sys.Map.eachWhile C# (CSharp) 메소드

        public object eachWhile(Func f)
        {
            IDictionaryEnumerator en = m_map.GetEnumerator();
              while (en.MoveNext())
              {
            object key = en.Key;
            object val = en.Value;
            object r = f.call(val, key);
            if (r != null) return r;
              }
              return null;
        }