Does F# have pursuit or hoogle?
f#
Solution
There is FSDN that allows hoogle-like searching in mscorlib, some System.* dlls and a few libraries (including FAKE).
Update 2022-06-11: FSDN seems to be offline. I don’t know an alternative.
Problem
I saw recently that some code (Fake, specifically) uses a function `@@` without defining it, presumeably it exists as part of the F# standard library, or somewhere else in .NET. How do I search online for this type? Is there a pursuit-like or hoogle-like database I can use? This question focuses more on how to find a particular function, and incidentally, `hoogle` alternatives. There are two very good answers, and the nature of the answers and comments are quite different.