Sometimes in F# it is useful to use LINQ extension methods such as .Take(n), .Skip(n) and .Count(). However, in F# some LINQ extension methods such as .Where(...) and .Select(...) require a type annotation on the lambda variable. This is one of the relatively rare cases where F# code requires a type annotation where other languages do not, and is due to differences in the process of type inference and method overload resolution. Luckily, there is a simple useful workaround. First add the library code below[...]