http://blogs.msdn.com/jomo_fisher/archive/2007/09/16/adventures-in-f-tuples.aspxJomo Fisher--In a comment on my bloglet about type inference in F# John Harrop suggested I try: let f (a,b)=(b,a) Which, under Reflector, gives this equivalent in C#: public static Tuple&lt;U, T&gt; f&lt;T, U&gt;(T a, U b) { return new Tuple&lt;U, T&gt;(b,en-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/jomo_fisher/archive/2007/09/16/adventures-in-f-tuples.aspx#4945250Sun, 16 Sep 2007 23:28:31 GMT91d46819-8472-40ad-a661-2c78acb4018c:4945250MSDN Blog Postings » Adventures in F#--Poking Tuples with a Stick<p>PingBack from <a rel="nofollow" target="_new" href="http://msdnrss.thecoderblogs.com/2007/09/16/adventures-in-f-poking-tuples-with-a-stick/">http://msdnrss.thecoderblogs.com/2007/09/16/adventures-in-f-poking-tuples-with-a-stick/</a></p> http://blogs.msdn.com/jomo_fisher/archive/2007/09/16/adventures-in-f-tuples.aspx#4962661Tue, 18 Sep 2007 00:19:46 GMT91d46819-8472-40ad-a661-2c78acb4018c:4962661Jomo Fisher -- C#, LINQ and Whatnot<p>Jomo Fisher-- Easily my favorite feature of F# so far is the combination of discriminated union and pattern</p> http://blogs.msdn.com/jomo_fisher/archive/2007/09/16/adventures-in-f-tuples.aspx#4962931Tue, 18 Sep 2007 00:47:12 GMT91d46819-8472-40ad-a661-2c78acb4018c:4962931MichaelGiagnocavo<p>Another fantastic feature that I wish C# natively supported... good bye out params...</p>