unsplash-logoQuinten de Graaf Introduction One thing that I found to be a point of confusion when learning F♯ is when one should use the foward pipe (|>) operator and the function composition (>>) operator. Conceptually they seem almost identical: they allow you to build an expression in which one function is called on an input, and the result is the input to the next function, and the result of the expression is the result of the second function.