Struct Flags 

pub struct Flags<'a> { /* private fields */ }

Walks a command line flag by flag.

Implementations

impl<'a> Flags<'a>

pub fn new(args: &'a [String]) -> Self

A walk over args, the program name not among them.

pub fn next_flag(&mut self) -> Option<Flag>

The next flag, None past the last argument.

pub fn value(&mut self, flag: &Flag) -> Result<String, CliError>

The value of flag: what followed its =, or else the next argument, which the walk then passes over.

Errors

CliError::MissingValue when flag is the last argument.

pub fn parsed<T: FromStr>(&mut self, flag: &Flag) -> Result<T, CliError>

The value of flag, parsed.

Errors

CliError::MissingValue as Self::value; CliError::InvalidValue when the value does not parse.

Trait Implementations

impl<'a> Debug for Flags<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.