module examples.defcmd; import std.stdio; import cmdline; void main(in string[] argv) { program.name("defcmd"); program.setConfigOption(); program .command("build") .description("build web site for deployment") .action(() { writeln("build"); }); program .command("deploy") .description("deploy web site to production") .action(() { writeln("deploy"); }); program .command("serve", ["isDefault": true]) .description("launch web serve") .option("-p, --port <port-num>", "web port", 8080) .action((opts) { writefln("serve on port %4d", opts("port").get!int); }); program.addHelpText(AddHelpPos.Before, ` Try the following: $ defcmd build $ defcmd serve -p 1234 $ defcmd $ defcmd -p 2345 `); program.parse(argv); }