How much does the solution of common tasks significantly increase the efficiency of work?

Question

Programming

There are general tasks and private tasks. General tasks are tasks from programming problem books. Private tasks are tasks that occur in real work.
To what extent does the solution of general problems increase the efficiency of solving particular ones? Is it worth spending time on common tasks?

Answer 1

The ability to solve problems from the problem book will help to solve problems from the problem book more effectively.