Command line parsing lib VLang

yes, the os module. this example outputs each command line argument

import os

fn main() {
    for arg in os.args {
        println(arg)
    }
}

when run on my system: program.exe hello! returns

D:\Documents\V\program.exe
hello!

Edit: I now see what you were aiming for with command line parsing. No, there are no existing modules that allow you to do this.

As of November 2020, the command-line arguments parsing is included in the standard library.

Example from V repository

import cli { Command, Flag }
import os

fn main() {
    mut cmd := Command{
        name: 'cli'
        description: 'An example of the cli library.'
        version: '1.0.0'
    }
    mut greet_cmd := Command{
        name: 'greet'
        description: 'Prints greeting in different languages.'
        usage: '<name>'
        required_args: 1
        pre_execute: greet_pre_func
        execute: greet_func
        post_execute: greet_post_func
    }
    greet_cmd.add_flag(Flag{
        flag: .string
        required: true
        name: 'language'
        abbrev: 'l'
        description: 'Language of the message.'
    })
    greet_cmd.add_flag(Flag{
        flag: .int
        name: 'times'
        value: '3'
        description: 'Number of times the message gets printed.'
    })
    cmd.add_command(greet_cmd)
    cmd.parse(os.args)
}

Output

$ v run ./examples/cli.v 
Usage: cli [flags] [commands]

An example of the cli library.

Flags:
  -help               Prints help information.
  -version            Prints version information.

Commands:
  greet               Prints greeting in different languages.
  help                Prints help information.
  version             Prints version information.