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 ToUppercaseimpl Display for Utf8Lossyimpl Display for DecodeUtf16Errorimpl Display for ToLowercaseimpl Display for FromUtf8Errorimpl Display for AllocErrimpl Display for ParseErrorimpl<'a, B> Display for Cow<'a, B> where
B: Display + ToOwned + ?Sized,
<B as ToOwned>::Owned: Display,impl Display for Stringimpl Display for CannotReallocInPlaceimpl<T> Display for Rc<T> where
T: Display + ?Sized,impl Display for FromUtf16Errorimpl<T> Display for Box<T> where
T: Display + ?Sized,impl<T> Display for Arc<T> where
T: Display + ?Sized,impl Display for f64impl Display for i128impl Display for Utf8Errorimpl Display for EscapeDefaultimpl Display for u16impl Display for u64impl Display for ParseBoolErrorimpl Display for u32impl Display for charimpl Display for i32impl Display for i64impl Display for ParseCharErrorimpl<'a, T> Display for Ref<'a, T> where
T: Display + ?Sized,impl Display for ParseIntErrorimpl<'a> Display for Arguments<'a>impl Display for EscapeUnicodeimpl Display for ParseFloatErrorimpl Display for boolimpl Display for CharTryFromErrorimpl Display for TryFromIntErrorimpl Display for usizeimpl Display for isizeimpl Display for f32impl Display for u8impl Display for !impl Display for u128impl Display for strimpl Display for BorrowMutErrorimpl<'a, T> Display for &'a mut T where
T: Display + ?Sized,impl Display for i8impl Display for Errorimpl<'a, T> Display for &'a T where
T: Display + ?Sized,impl Display for EscapeDebugimpl<T> Display for Wrapping<T> where
T: Display,impl Display for i16impl Display for BorrowErrorimpl<'a, T> Display for RefMut<'a, T> where
T: Display + ?Sized,