1.0.0[][src]Trait core::fmt::Display

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 };

println!("The origin is: {}", origin);Run

Required methods

fn fmt(&self, f: &mut Formatter) -> Result

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
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Implementors

impl Display for ![src]

impl Display for AllocErr[src]

impl Display for CannotReallocInPlace[src]

impl Display for LayoutErr[src]

impl Display for TryFromSliceError[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 Error[src]

impl Display for NonZeroI128[src]

impl Display for NonZeroI16[src]

impl Display for NonZeroI32[src]

impl Display for NonZeroI64[src]

impl Display for NonZeroI8[src]

impl Display for NonZeroIsize[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 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<'_> Display for Arguments<'_>[src]

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

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

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

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

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

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