[−][src]Struct jomini::Scalar
A byte slice that represents a single value.
A scalars does not carry with it an encoding, so an appropriate encoder must be used if text is wished to be extracted from a scalar
use jomini::Scalar; let v1 = Scalar::new(b"10"); assert_eq!(v1.to_u64(), Ok(10)); assert_eq!(v1.to_i64(), Ok(10)); assert_eq!(v1.to_f64(), Ok(10.0)); assert!(v1.to_bool().is_err());
Implementations
impl<'a> Scalar<'a>
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pub fn new(data: &'a [u8]) -> Scalar<'a>
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Create a new scalar backed by a byte slice
pub fn view_data(&self) -> &'a [u8]
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View the raw data
pub fn to_f64(&self) -> Result<f64, ScalarError>
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Try converting the scalar to f64
use jomini::Scalar; let v1 = Scalar::new(b"1.000"); assert_eq!(v1.to_f64(), Ok(1.0)); let v2 = Scalar::new(b"-5.67821"); assert_eq!(v2.to_f64(), Ok(-5.67821));
pub fn to_bool(&self) -> Result<bool, ScalarError>
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Try converting the scalar to boolean, only "yes" and "no" can be mapped:
use jomini::Scalar; let v1 = Scalar::new(b"yes"); assert_eq!(v1.to_bool(), Ok(true)); let v2 = Scalar::new(b"no"); assert_eq!(v2.to_bool(), Ok(false));
pub fn to_i64(&self) -> Result<i64, ScalarError>
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Try converting the scalar to i64
use jomini::Scalar; let v1 = Scalar::new(b"-50"); assert_eq!(v1.to_i64(), Ok(-50)); let v2 = Scalar::new(b"120"); assert_eq!(v2.to_i64(), Ok(120));
pub fn to_u64(&self) -> Result<u64, ScalarError>
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Try converting the scalar to u64
use jomini::Scalar; let v1 = Scalar::new(b"50"); assert_eq!(v1.to_i64(), Ok(50)); let v2 = Scalar::new(b"120"); assert_eq!(v2.to_i64(), Ok(120));
pub fn is_ascii(&self) -> bool
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Returns if the scalar contains only ascii values
use jomini::Scalar; let v1 = Scalar::new(b"a"); assert!(v1.is_ascii()); let v2 = Scalar::new(&[255][..]); assert!(!v2.is_ascii());
Trait Implementations
impl<'a> Clone for Scalar<'a>
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impl<'a> Copy for Scalar<'a>
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impl<'a> Debug for Scalar<'a>
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impl<'a> Display for Scalar<'a>
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impl<'a> PartialEq<Scalar<'a>> for Scalar<'a>
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impl<'a> StructuralPartialEq for Scalar<'a>
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Auto Trait Implementations
impl<'a> RefUnwindSafe for Scalar<'a>
impl<'a> Send for Scalar<'a>
impl<'a> Sync for Scalar<'a>
impl<'a> Unpin for Scalar<'a>
impl<'a> UnwindSafe for Scalar<'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> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
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>,