Skip and Take throw Exception.

[gusty]

An exception is thrown when outside the bounds but that's a problem when using seq aiming for laziness, it will force you to check first the length of the sequence.
That's how they're implemented in F# but I prefer the Linq implementation which works as Haskell's drop and take, in those cases it returns an empty list which logically represents 'no results'.

[atifaziz]

The F# equivalent of Take from LINQ is called truncate that does not throw if the sequence has fewer elements than the specified count.

[gusty]

So, may be can we leave them as they are and add another 2 functions: drop and truncate with that (safe) behaviour.

[gusty]

I used the name Limit instead of Truncate because Truncate will conflict with the method of the same name for Numerics.