Trait collections::fmt::Display 1.0.0
[−]
[src]
pub trait Display {
fn fmt(&self, f: &mut Formatter) -> Result<(), Error>;
}Format trait for an empty format, {}.
Display is similar to Debug, but Display is for user-facing
output, and so cannot be derived.
For more information on formatters, see the module-level documentation.
Examples
Implementing Display on a type:
use std::fmt; struct Point { x: i32, y: i32, } impl fmt::Display for Point { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "({}, {})", self.x, self.y) } } let origin = Point { x: 0, y: 0 }; println!("The origin is: {}", origin);
Required Methods
fn fmt(&self, f: &mut Formatter) -> Result<(), Error>
Formats the value using the given formatter.
Examples
use std::fmt; struct Position { longitude: f32, latitude: f32, } impl fmt::Display for Position { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "({}, {})", self.longitude, self.latitude) } } assert_eq!("(1.987, 2.983)".to_owned(), format!("{}", Position { longitude: 1.987, latitude: 2.983, }));
Implementors
impl Display for Utf8Lossyimpl Display for ToUppercaseimpl Display for DecodeUtf16Errorimpl Display for ToLowercaseimpl Display for ParseErrorimpl<T> Display for Rc<T> where
T: Display + ?Sized,impl<T> Display for Box<T> where
T: Display + ?Sized,impl Display for Stringimpl Display for FromUtf16Errorimpl Display for AllocErrimpl<'a, B> Display for Cow<'a, B> where
B: Display + ToOwned + ?Sized,
<B as ToOwned>::Owned: Display,impl Display for CannotReallocInPlaceimpl<T> Display for Arc<T> where
T: Display + ?Sized,impl Display for FromUtf8Errorimpl Display for !impl Display for EscapeUnicodeimpl<'a, T> Display for &'a mut T where
T: Display + ?Sized,impl Display for ParseFloatErrorimpl Display for i32impl Display for ParseBoolErrorimpl Display for i128impl Display for EscapeDebugimpl Display for i16impl Display for u16impl Display for Errorimpl Display for strimpl Display for u8impl Display for ParseCharErrorimpl<'a, T> Display for Ref<'a, T> where
T: Display + ?Sized,impl Display for f64impl Display for BorrowErrorimpl<T> Display for Wrapping<T> where
T: Display,impl<'a, T> Display for RefMut<'a, T> where
T: Display + ?Sized,impl Display for CharTryFromErrorimpl Display for EscapeDefaultimpl Display for u64impl Display for Utf8Errorimpl Display for u128impl Display for u32impl Display for boolimpl Display for TryFromIntErrorimpl Display for usizeimpl Display for ParseIntErrorimpl Display for charimpl Display for i64impl Display for i8impl<'a, T> Display for &'a T where
T: Display + ?Sized,impl Display for isizeimpl<'a> Display for Arguments<'a>impl Display for BorrowMutErrorimpl Display for f32