Trait core::fmt::Display1.0.0[][src]

pub trait Display {
    fn fmt(&self, f: &mut Formatter<'_>) -> Result;
}

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 };

assert_eq!(format!("The origin is: {}", origin), "The origin is: (0, 0)");
Run

Required methods

fn fmt(&self, f: &mut Formatter<'_>) -> Result[src]

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)",
           format!("{}", Position { longitude: 1.987, latitude: 2.983, }));
Run
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Implementors

impl Display for ![src]

impl Display for Infallible1.34.0[src]

impl Display for AllocError[src]

impl Display for LayoutError1.28.0[src]

impl Display for TryFromSliceError1.36.0[src]

impl Display for core::ascii::EscapeDefault1.39.0[src]

impl Display for BorrowError1.13.0[src]

impl Display for BorrowMutError1.13.0[src]

impl Display for CharTryFromError1.34.0[src]

impl Display for DecodeUtf16Error1.9.0[src]

impl Display for core::char::EscapeDebug1.20.0[src]

impl Display for core::char::EscapeDefault1.16.0[src]

impl Display for core::char::EscapeUnicode1.16.0[src]

impl Display for ParseCharError1.20.0[src]

impl Display for ToLowercase1.16.0[src]

impl Display for ToUppercase1.16.0[src]

impl Display for Arguments<'_>[src]

impl Display for Error[src]

impl Display for NonZeroI81.34.0[src]

impl Display for NonZeroI161.34.0[src]

impl Display for NonZeroI321.34.0[src]

impl Display for NonZeroI641.34.0[src]

impl Display for NonZeroI1281.34.0[src]

impl Display for NonZeroIsize1.34.0[src]

impl Display for NonZeroU81.28.0[src]

impl Display for NonZeroU161.28.0[src]

impl Display for NonZeroU321.28.0[src]

impl Display for NonZeroU641.28.0[src]

impl Display for NonZeroU1281.28.0[src]

impl Display for NonZeroUsize1.28.0[src]

impl Display for ParseFloatError[src]

impl Display for ParseIntError[src]

impl Display for TryFromIntError1.34.0[src]

impl Display for Location<'_>1.26.0[src]

impl Display for PanicInfo<'_>1.26.0[src]

impl Display for Utf8Lossy[src]

impl Display for ParseBoolError[src]

impl Display for Utf8Error[src]

impl Display for bool[src]

impl Display for char[src]

impl Display for f32[src]

impl Display for f64[src]

impl Display for i8[src]

impl Display for i16[src]

impl Display for i32[src]

impl Display for i64[src]

impl Display for i128[src]

impl Display for isize[src]

impl Display for str[src]

impl Display for u8[src]

impl Display for u16[src]

impl Display for u32[src]

impl Display for u64[src]

impl Display for u128[src]

impl Display for usize[src]

impl<'a> Display for core::str::EscapeDebug<'a>1.34.0[src]

impl<'a> Display for core::str::EscapeDefault<'a>1.34.0[src]

impl<'a> Display for core::str::EscapeUnicode<'a>1.34.0[src]

impl<P: Display> Display for Pin<P>1.33.0[src]

impl<T: Display> Display for Wrapping<T>1.10.0[src]

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

impl<T: ?Sized + Display> Display for &mut T[src]

impl<T: ?Sized + Display> Display for Ref<'_, T>1.20.0[src]

impl<T: ?Sized + Display> Display for RefMut<'_, T>1.20.0[src]

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