Command-Line Options and the std.getopt Module

In the previous lesson, you learned all there is to know about the parameters and the return value of main(). However, parsing the arguments is a repetitive task. The std.getopt module is designed to help with parsing the command line options of programs.

Command-line options #

Some parameters like “world” and “hello” are purely data for the program to use. Other kinds of parameters are called command-line options and are used ...