IEnumerable and IEnumerable(Of T) 2

Quick follow up to my earlier post.  Fixing this issue in C# is even easier because of the existence of iterators. 

         public static IEnumerable<object> Shim(System.Collections.IEnumerable enumerable)
        {
            foreach (var cur in enumerable)
            {
                yield return cur;
            }
        }

Comments

• Anonymous
  October 05, 2007
  PingBack from http://www.artofbam.com/wordpress/?p=5481

• Anonymous
  October 05, 2007
  You can only use "var" if you're running .NET 3.5; otherwise, you need to use "object". (If you are running 3.5, I believe this method is already included as one of the LINQ extension methods.) Sticking with .NET 2.0, if you want a strongly-typed enumerator, or to change the type of an existing IEnumerable<T>, you can use a Converter<TInput, TOutput> delegate: public static IEnumerable<T> Shim<T>(IEnumerable enumerable, Converter<object, T> convert) {    foreach (object item in enumerable)    {        yield return convert(item);    } } public static IEnumerable<TOutput> Shim<TInput, TOutput>(IEnumerable<TInput> enumerable, Converter<TInput, TOutput> convert) {    foreach (TInput item in enumerable)    {        yield return convert(item);    } }

• Anonymous
  October 29, 2007
  richard_deeming: If you set your VS2008 project to target .NET 2.0, you can still get the new language features. var and lambdas work for free, and you can get extension methods working by defining a single tiny class (ExtensionAttribute)