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