.NET Framework Performance Signatures

I love Rico’s performance quizzes in general, but the last one has something especially interesting: a link to a file listing all members in the Framework and their estimated performance signatures (perf characteristic based on the number of allocations in the member).

Now, I only wish I had an fxcop rule warning me when I call some of the expensive members in loops, low on the callstack, on the UI thread, or in any other performance sensitive places.