It is an old observation that the best writers sometimes disregard the rules of rhetoric. When they do so, however, the reader will usually find in the sentence some compensation merit, attained at the cost of the violation. Unless he is certain of doing as well, he will probably do best to follow the rules.
Its carefully written, formatted, and commented, and the program it comes from works extremely well; the programmers who created this system are rightly proud of what they built. But this excerpt is puzzling to the casual reader. What relationship links Singapore, Brunei, Poland and Italy? Why isnt Italy mentioned in the comment? Since the comment and the code differ, one of them must be wrong. Maybe both are. The code is what gets executed and tested, so its more likely to be right; probably the comment didnt get updated when the code did. The comment doesnt say enough about the relationship among the three countries it does mention; if you had to maintain this code, you would need to know more.
The few lines above are typical of much real code: mostly well done, but with some things could be improved.