Using a language in which 1 + "1" == "11" instead of one of the best type and null-safe languages to be developed in the past few years is not exactly my idea o

Using a language in which 1 + "1" == "11" instead of one of the best type and null-safe languages to be developed in the past few years is not exactly my idea of a delightful experience, but interface as a pure function of state is a good idea.