Question

This may not be a actual question, but I just asked it for the sake of gaining some valuable added knowledge. I have come across this many times(as in reading many articles and blogs) that once a person becomes an expert in a particular programming language, they have the tendency to optimize their code in whatever application they built by seeing how the minutest details are implemented by seeing the compiler code of each built in class they use for developing the application. But I have seen no example of such a situation. Can anyone please suggest any or give a snippet. I am quite good at Java so if any such optimization example exists in Java could anyone please write a code snippet.
If not I don’t mind for any prog. language as the question encompasses almost the presently used ones.

Answer 1

once a person becomes an expert in a particular programming language, they have the tendency to optimize their code in whatever application they built by seeing how the minutest details are implemented by seeing the compiler code of each built in class they use for developing the application

Actually I would say the opposite, instead you are more likely to see

• beginners: just need to get anything which works.
• intermediate: try to optimise everything just because you can.
• expert: ease of understanding and maintenance is the most important. Simple, clean code often performs best and when you can determine code needs to be optimised, only then do so. e.g. because you measured it with a profiler.

Can anyone please suggest any or give a snippet

I suggest you read the code in the java.lang.*, java.util.* and java.util.concurent.* These are widely used and expertly optimised for Java. If you are assuming that complicated or obtuse code is more “expert” you are likely to be disappointed. 😉