Struct Arg 

pub struct Arg {
    pub usage: Option<String>,
    pub default: Option<String>,
    pub required: bool,
    pub private: bool,
}

An argument (positional parameter) definition

Fields

usage: Option<String>

Usage description for help text

default: Option<String>

Default value

required: bool

Required argument

private: bool

Private argument (hidden from help)

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.

impl<'de> Deserialize<'de> for Arg

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Arg

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.