Hard to help when you post partial code and the part missing is the much needed variable declarations. In one place you refer "IPAddress" as a function and in another place you refer it as a class. Try "IPAddress()::isValid(...)"
Hard to help when you post partial code and the part missing is the much needed variable declarations. In one place you refer "IPAddress" as a function and in another place you refer it as a class. Try "IPAddress()::isValid(...)"