F# does allow custom infix operators, but of course prefix + piping is generally cleaner. Only time I've used custom infix are for implementing a "null coalesce

F# does allow custom infix operators, but of course prefix + piping is generally cleaner. Only time I've used custom infix are for implementing a "null coalesce" operator and for overloading math ops for vectors and matrices. The null coalescing is generally only used for code that interops with c# since f# offers non null guarantees for most types.