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Trait std::fmt::Display

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

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, }));

Implementations on Foreign Types

impl Display for TryFromSliceError [src]

impl Display for Utf8Lossy [src]

Implementors

impl Display for VarError [src]

impl Display for IpAddr [src]

impl Display for SocketAddr [src]

impl Display for ParseError [src]

impl Display for RecvTimeoutError [src]

impl Display for TryRecvError [src]

impl Display for bool [src]

impl Display for char [src]

impl Display for f32 [src]

impl Display for f64 [src]

impl Display for i128 [src]

impl Display for i16 [src]

impl Display for i32 [src]

impl Display for i64 [src]

impl Display for i8 [src]

impl Display for isize [src]

impl Display for ! [src]

impl Display for str [src]

impl Display for u128 [src]

impl Display for u16 [src]

impl Display for u32 [src]

impl Display for u64 [src]

impl Display for u8 [src]

impl Display for usize [src]

impl Display for AllocErr [src]

impl Display for CannotReallocInPlace [src]

impl Display for LayoutErr [src]

impl Display for BorrowError [src]

impl Display for BorrowMutError [src]

impl Display for CharTryFromError [src]

impl Display for DecodeUtf16Error [src]

impl Display for EscapeDebug [src]

impl Display for EscapeDefault [src]

impl Display for EscapeUnicode [src]

impl Display for ParseCharError [src]

impl Display for ToLowercase [src]

impl Display for ToUppercase [src]

impl Display for JoinPathsError [src]

impl Display for FromBytesWithNulError [src]

impl Display for IntoStringError [src]

impl Display for NulError [src]

impl Display for std::fmt::Error [src]

impl Display for std::io::Error [src]

impl Display for AddrParseError [src]

impl Display for Ipv4Addr [src]

impl Display for Ipv6Addr [src]

impl Display for SocketAddrV4 [src]

impl Display for SocketAddrV6 [src]

impl Display for NonZeroU128 [src]

impl Display for NonZeroU16 [src]

impl Display for NonZeroU32 [src]

impl Display for NonZeroU64 [src]

impl Display for NonZeroU8 [src]

impl Display for NonZeroUsize [src]

impl Display for ParseFloatError [src]

impl Display for ParseIntError [src]

impl Display for TryFromIntError [src]

impl Display for StripPrefixError [src]

impl Display for ExitStatus [src]

impl Display for ParseBoolError [src]

impl Display for Utf8Error [src]

impl Display for FromUtf16Error [src]

impl Display for FromUtf8Error [src]

impl Display for String [src]

impl Display for RecvError [src]

impl Display for AccessError [src]

impl Display for SystemTimeError [src]

impl<'a> Display for Arguments<'a> [src]

impl<'a> Display for Location<'a> [src]

impl<'a> Display for PanicInfo<'a> [src]

impl<'a> Display for Display<'a> [src]

impl<'a, B> Display for Cow<'a, B> where
    B: Display + ToOwned + ?Sized,
    <B as ToOwned>::Owned: Display
[src]

impl<'a, T> Display for &'a T where
    T: Display + ?Sized
[src]

impl<'a, T> Display for &'a mut T where
    T: Display + ?Sized
[src]

impl<'a, T> Display for Ref<'a, T> where
    T: Display + ?Sized
[src]

impl<'a, T> Display for RefMut<'a, T> where
    T: Display + ?Sized
[src]

impl<'a, T> Display for PinMut<'a, T> where
    T: Display + ?Sized
[src]

impl<'a, T: ?Sized + Display> Display for MutexGuard<'a, T> [src]

impl<'a, T: ?Sized + Display> Display for RwLockReadGuard<'a, T> [src]

impl<'a, T: ?Sized + Display> Display for RwLockWriteGuard<'a, T> [src]

impl<T> Display for TryLockError<T> [src]

impl<T> Display for TrySendError<T> [src]

impl<T> Display for Box<T> where
    T: Display + ?Sized
[src]

impl<T> Display for Wrapping<T> where
    T: Display
[src]

impl<T> Display for PinBox<T> where
    T: Display + ?Sized
[src]

impl<T> Display for Rc<T> where
    T: Display + ?Sized
[src]

impl<T> Display for SendError<T> [src]

impl<T> Display for Arc<T> where
    T: Display + ?Sized
[src]

impl<T> Display for PoisonError<T> [src]

impl<W> Display for IntoInnerError<W> [src]

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/fmt/trait.Display.html