[−][src]Struct roa_core::Variable
A wrapper of String.
Example
use roa_core::Variable; use http::StatusCode; assert_eq!(1, Variable::new("id", "1".to_string()).parse().unwrap()); let result = Variable::new("id", "x".to_string()).parse::<usize>(); assert!(result.is_err()); let status = result.unwrap_err(); assert_eq!(StatusCode::BAD_REQUEST, status.status_code); assert!(status.message.ends_with("type of variable `id` should be usize"));
Methods
impl<'a> Variable<'a>
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pub fn new(name: &'a str, value: String) -> Self
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Construct a variable from name and value.
pub fn parse<T>(&self) -> Result<T, Error> where
T: FromStr,
T::Err: Display,
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T: FromStr,
T::Err: Display,
A wrapper of str::parse
. Converts T::FromStr::Err
to Status
automatically.
Example
use roa_core::Variable; use http::StatusCode; let result = Variable::new("id", "x".to_string()).parse::<usize>(); assert!(result.is_err()); let status = result.unwrap_err(); assert_eq!(StatusCode::BAD_REQUEST, status.status_code); assert!(status.message.ends_with("type of variable `id` should be usize"));
pub fn into_value(self) -> String
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Into inner value.
Trait Implementations
impl<'_> AsRef<str> for Variable<'_>
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impl<'a> Clone for Variable<'a>
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impl<'a> Debug for Variable<'a>
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impl<'_> Deref for Variable<'_>
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Auto Trait Implementations
impl<'a> RefUnwindSafe for Variable<'a>
impl<'a> Send for Variable<'a>
impl<'a> Sync for Variable<'a>
impl<'a> Unpin for Variable<'a>
impl<'a> UnwindSafe for Variable<'a>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,