Struct Arg 

pub struct Arg {
    pub arg_type: ArgType,
    pub short: Option<&'static str>,
    pub long: Option<&'static str>,
    pub required: bool,
    pub value: Option<OsString>,
}

Represents a type-safe argument specification.

Fields

arg_type: ArgType

The argument type

short: Option<&'static str>

Short form (e.g., -v)

long: Option<&'static str>

Long form (e.g., --verbose)

required: bool

Whether this argument is required

value: Option<OsString>

The argument value (if any)

Implementations

impl Arg

pub fn flag(short: &'static str, long: &'static str) -> Self

Creates a new required flag argument.

pub fn optional_flag(short: &'static str, long: &'static str) -> Self

Creates a new optional flag argument.

pub fn option(short: &'static str, long: &'static str) -> Self

Creates a new required option argument.

pub fn optional_option(short: &'static str, long: &'static str) -> Self

Creates a new optional option argument.

pub fn positional() -> Self

Creates a new positional argument.

pub fn optional_positional() -> Self

Creates a new optional positional argument.

pub fn value<V: AsRef<OsStr>>(self, value: V) -> Self

Sets the value for this argument.

pub fn to_strings(&self) -> Vec<OsString>

Converts this argument to command-line strings.

Trait Implementations

impl Clone for Arg

fn clone(&self) -> Arg

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Arg

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

Formats the value using the given formatter.