Trait collections::fmt::Display 1.0.0
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[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 ToLowercaseimpl Display for Utf8Lossyimpl Display for DecodeUtf16Errorimpl Display for ParseErrorimpl<'a, B> Display for Cow<'a, B> where
B: Display + ToOwned + ?Sized,
<B as ToOwned>::Owned: Display,impl Display for Stringimpl<T> Display for Arc<T> where
T: Display + ?Sized,impl Display for FromUtf8Errorimpl<T> Display for Box<T> where
T: Display + ?Sized,impl<T> Display for Rc<T> where
T: Display + ?Sized,impl Display for FromUtf16Errorimpl Display for AllocErrimpl Display for CannotReallocInPlaceimpl Display for BorrowMutErrorimpl Display for u16impl Display for !impl Display for boolimpl Display for strimpl Display for i16impl Display for isizeimpl Display for EscapeDefaultimpl Display for ParseFloatErrorimpl Display for Utf8Errorimpl Display for usizeimpl Display for BorrowErrorimpl Display for CharTryFromErrorimpl<T> Display for Wrapping<T> where
T: Display,impl Display for charimpl Display for EscapeUnicodeimpl<'a, T> Display for RefMut<'a, T> where
T: Display + ?Sized,impl Display for i8impl Display for i128impl Display for i32impl Display for ParseCharErrorimpl Display for Errorimpl Display for EscapeDebugimpl Display for TryFromIntErrorimpl<'a, T> Display for &'a T where
T: Display + ?Sized,impl Display for u32impl Display for u64impl<'a, T> Display for Ref<'a, T> where
T: Display + ?Sized,impl Display for f32impl<'a, T> Display for &'a mut T where
T: Display + ?Sized,impl Display for ParseIntErrorimpl Display for ParseBoolErrorimpl<'a> Display for Arguments<'a>impl Display for u8impl Display for f64impl Display for i64impl Display for u128