a written Constitutional law

The distribution of powers and functions among the three wings, namely,

1,The Executive, 2,The Legislature and 3,The Judiciary.

The Source of a written Constitutional  law is the constituent Assembly itself and there is no ambiquity about its time of making the constitution or about the process of making the same,The constituent Assembly consists of the representative of the people and after exhaustive deliberations, the Indian Constitution has been adopted, enacted and given to the people, In contrast, the evolution of the British Constitution which is an unwritten Constitution is a well ripened fruit of wise delay. It  took centuries to evolve commencing with the Magna Carta,1215 and over the years its evolution has been steady , healthy and illustrious. Various conventions from the Constitutional law of England. It is marvel that without there being a written Constitution the State in England is functioning based only on conventions which are honoured as if they  are written laws.