Struct Argument 

#[non_exhaustive]
pub struct Argument {
    pub key: Option<String>,
    pub value: String,
}

A command argument.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

key: Option<String>

The argument key, for key=value style arguments. Not guaranteed to be unique, the Runner can handle this as desired.

value: String

The argument value. Can be empty.

Implementations

impl Argument

pub fn name(&self) -> &str

Returns a name for the argument – either the key, if given, or value.

pub fn parse<T>(&self) -> Result<T, Box<dyn Error>>

where T: FromStr, <T as FromStr>::Err: Display,

Parses the argument value as a T using flow::str::parse(). Convenience method that returns an improved error message as a boxed error to ease error handling in a Runner.

Trait Implementations

impl Clone for Argument

fn clone(&self) -> Argument

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Argument

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

Formats the value using the given formatter.

impl PartialEq for Argument

fn eq(&self, other: &Argument) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Argument