Lx=d: SundayResearch

I always try to simplify a command line parser implementation regardless any programming language: C++, bash, ... To do that, I restrict the command line option to a regular form only. All my arguments should be '-arg_key value' form. Even I want to specify a file name, my program needs an argument key, e.g., '-in_file input_filename. If you do in this way, each command line argument has the key, so I can put all the command line options to a map. This makes the command line parser simple. I usually don't need getopt library. Also I try to simplify the command line option support, means smaller number of command line options, and use a config file, which contains 'key = value' lines. This has two advantages: you can support negative values without confusing the command line option, easy to reproduce the test case. However, this method still has a problem when the command line option includes white space. If I could, I will only try to use config files,...