clap/examples/tutorial_derive/04_02_validate.md
Ed Page 0184cf008a fix(parser): Quote the suggested help
We do it elsewhere but here it is only distinguished coloring.

Inspired by #4218
2022-09-15 16:24:59 -05:00

622 B

$ 04_02_validate_derive --help
A simple to use, efficient, and full-featured Command Line Argument Parser

Usage: 04_02_validate_derive[EXE] <PORT>

Arguments:
  <PORT>  Network port to use

Options:
  -h, --help     Print help information
  -V, --version  Print version information

$ 04_02_validate_derive 22
PORT = 22

$ 04_02_validate_derive foobar
? failed
error: Invalid value "foobar" for '<PORT>': `foobar` isn't a port number

For more information try '--help'

$ 04_02_validate_derive 0
? failed
error: Invalid value "0" for '<PORT>': Port not in range 1-65535

For more information try '--help'