Struct roa_core::Variable

pub struct Variable<'a, V> { /* fields omitted */ }

A wrapper of Arc.

Deref

use roa_core::Variable;

fn consume<V>(var: Variable<V>) {
    let value: &V = &var;
}

Parse

use roa_core::{Variable, Result};

fn consume<V: AsRef<str>>(var: Variable<V>) -> Result {
    let value: i32 = var.parse()?;
    Ok(())
}

Implementations

impl<'a, V> Variable<'a, V>

pub fn value(self) -> Arc<V>

Consume self and get inner Arc.

impl<V> Variable<'_, V> where
    V: AsRef<str>, 

pub fn parse<T>(&self) -> Result<T, Status> where
    T: FromStr,
    T::Err: Display, 

A wrapper of str::parse. Converts T::FromStr::Err to roa_core::Error automatically.

Trait Implementations

impl<'a, V: Clone> Clone for Variable<'a, V>

fn clone(&self) -> Variable<'a, V>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, V: Debug> Debug for Variable<'a, V>

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

Formats the value using the given formatter.

impl<V> Deref for Variable<'_, V>

type Target = V

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.