Trait std::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);Run
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, }));Run
Implementors
impl Display for ToLowercaseimpl Display for DecodeUtf16Errorimpl Display for Utf8Lossyimpl Display for ToUppercaseimpl<T> Display for Rc<T> where
T: Display + ?Sized,impl<'a, B> Display for Cow<'a, B> where
B: Display + ToOwned + ?Sized,
<B as ToOwned>::Owned: Display,impl Display for ParseErrorimpl Display for FromUtf16Errorimpl Display for FromUtf8Errorimpl Display for Stringimpl Display for AllocErrimpl<T> Display for Arc<T> where
T: Display + ?Sized,impl Display for CannotReallocInPlaceimpl<T> Display for Box<T> where
T: Display + ?Sized,impl Display for u64impl Display for charimpl<'a, T> Display for Ref<'a, T> where
T: Display + ?Sized,impl<T> Display for Wrapping<T> where
T: Display,impl Display for BorrowErrorimpl Display for BorrowMutErrorimpl Display for EscapeDefaultimpl Display for u32impl Display for strimpl Display for ParseIntErrorimpl Display for !impl<'a> Display for Arguments<'a>impl<'a, T> Display for &'a mut T where
T: Display + ?Sized,impl Display for EscapeUnicodeimpl Display for CharTryFromErrorimpl Display for i16impl Display for f64impl Display for ParseBoolErrorimpl Display for EscapeDebugimpl Display for ParseFloatErrorimpl Display for u128impl Display for isizeimpl Display for u8impl Display for i128impl Display for TryFromIntErrorimpl Display for usizeimpl Display for std::fmt::Errorimpl Display for i32impl Display for ParseCharErrorimpl Display for u16impl Display for boolimpl Display for Utf8Errorimpl Display for f32impl Display for i64impl Display for i8impl<'a, T> Display for RefMut<'a, T> where
T: Display + ?Sized,impl<'a, T> Display for &'a T where
T: Display + ?Sized,impl Display for AccessErrorimpl Display for VarErrorimpl Display for JoinPathsErrorimpl Display for NulErrorimpl Display for FromBytesWithNulErrorimpl Display for IntoStringErrorimpl<W> Display for IntoInnerError<W>impl Display for std::io::Errorimpl Display for CharsErrorimpl Display for IpAddrimpl Display for Ipv4Addrimpl Display for Ipv6Addrimpl Display for SocketAddrimpl Display for SocketAddrV4impl Display for SocketAddrV6impl Display for AddrParseErrorimpl<'a> Display for Display<'a>impl Display for StripPrefixErrorimpl Display for ExitStatusimpl<T> Display for SendError<T>impl<T> Display for TrySendError<T>impl Display for RecvErrorimpl Display for TryRecvErrorimpl Display for RecvTimeoutErrorimpl<'a, T: ?Sized + Display> Display for MutexGuard<'a, T>impl<'a, T: ?Sized + Display> Display for RwLockReadGuard<'a, T>impl<'a, T: ?Sized + Display> Display for RwLockWriteGuard<'a, T>impl Display for SystemTimeErrorimpl<T> Display for PoisonError<T>impl<T> Display for TryLockError<T>