Under Section 8 of the Indian Independence Act, 1947, the Government of India Act, 1935 became, with certain adaptations, the working Constitution of Pakistan. But the need of a constitution framed by the elected representatives of the people was all the more necessary for the free people.
So the first constituent assembly under the Independence Act, 1947, was formed and was given two separate functions.
1. To frame a Constitution for the country.
2. To act as a Federal Legislative Assembly or Parliament until that Constitution came into effect.
Constitution-making in Pakistan became a highly complicated task. The first constituent assembly failed to complete the task of framing a constitution; after some seven years of work it had produced only two or three drafts for the constitution.
Helpful but too short and to the point information without brief explanation. must be explained more atleast another paragraph.