Function design_pattern_examples_rust::parse_options

pub(crate) fn parse_options(
    args: &[String],
    exercise_list: &Vec<Exercise>
) -> Result<Options, &'static str>

Helper function to parse the given options and return the results in the given Options structure. Displays help if requested.

Parameters

• args

  A list of strings containing the command line arguments (should not include the program name, which is normally the first item)

• exercises

  List of Exercise objects to display if help is needed.

Returns

Ok<Options> if successful (the Options structure is filled in with command line parameters. Returns Err<""> if help was requested and displayed (and therefore exit from program is desired).