Just now I got an email from a mailing list, saying that C++ helps to greatly reduce coding time in comparison to C. I have heard a lot about this argument. But is that true?
C++ can possibly accelerate development in two ways: firstly, OOP (Object-Oriented Programming) helps to organize large projects, and secondly, STL (Standard Template Library) saves time on reimplementing frequently used subroutines. However, I do not find C++ OOP greatly helps me. To me, it is not right to clearly classify a programming language as a procedure-oriented or object-oriented language. It is only right to say a development methodology is procedure-oriented or object-oriented. We can effectively mimic the fundamental OOP ideas in C, a socalled procedure-oriented language, by packaging related data in a struct and transfer the a pointer to the struct to subroutines. I know C++ programmers would argue doing in this way is far from OOP, but it has captured the essence of OOP and in practice sufficient to organize large projects with this simple and natural idea. The large amount of existing C projects, such as Linux kernel, gcc and Emacs, prove this is the truth. With OOP ideas, we can use C to organize large projects without difficulty. C++ does not provide more power except introducing more complicated concepts.
I do not use STL most of time. I have implemented most of useful subroutines in C/C++ by myself. I actually spend less time in using my own library than using STL as I am very familiar with my own codes. Of course, implementing an efficient and yet generic library by myself takes a lot of time, but I really learn a lot in this invaluable process. I can hardly imagine how a programmer who does not get a firm grasp of data structures, which can only be achieved by implementing by him/herself, can ever write good programs. To this end, I agree that for elementary programmers using STL reduces coding time; but this is achieved at the cost of weakening the ability to write better programs. And for an advanced programmer, using STL may help but probably does not save much time.
Note that I am not saying C++ is a bad language as a whole. In fact, I use C++ template functions a lot and C++ template classes at times. In this post, I just want to emphasize the importantance to focusing on the art of programming instead of on the artificial concepts or on the degree of laziness a language can provide.