Title here
Summary here
Command Line Arguments in D Programming Language
Command-line arguments are a common way to parameterize execution of programs. For example, dmd hello.d uses hello.d as an argument to the dmd program.
import std.stdio;
import std.array;
void main(string[] args)
{
// args provides access to raw command-line arguments.
// Note that the first value in this array is the program name,
// and args[1..$] holds the arguments to the program.
string[] argsWithProg = args;
string[] argsWithoutProg = args[1..$];
// You can get individual args with normal indexing.
string arg = args[3];
writeln(argsWithProg);
writeln(argsWithoutProg);
writeln(arg);
}To experiment with command-line arguments it’s best to compile the program first.
$ dmd command_line_arguments.d
$ ./command_line_arguments a b c d
["./command_line_arguments", "a", "b", "c", "d"]
["a", "b", "c", "d"]
cNext we’ll look at more advanced command-line processing with flags.