# Trait alloc::fmt::Display 1.0.0[−][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, }));

## Implementations on Foreign Types

###

`impl Display for NonZeroU128`

[src]

####

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

[src]

###

`impl Display for EscapeUnicode`

[src]

####

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

[src]

###

`impl<'a, T> Display for RefMut<'a, T> where T: Display + ?Sized,`

[src]

####

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

[src]

###

`impl<'a> Display for PanicInfo<'a>`

[src]

####

`fn fmt(&self, formatter: &mut Formatter) -> Result<(), Error>`

[src]

###

`impl Display for EscapeDebug`

[src]

####

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

[src]

###

`impl<T> Display for Wrapping<T> where T: Display,`

[src]

####

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

[src]

###

`impl Display for ToLowercase`

[src]

####

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

[src]

###

`impl Display for TryFromIntError`

[src]

####

`fn fmt(&self, fmt: &mut Formatter) -> Result<(), Error>`

[src]

###

`impl Display for TryFromSliceError`

[src]

####

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

[src]

###

`impl Display for DecodeUtf16Error`

[src]

####

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

[src]

###

`impl Display for NonZeroUsize`

[src]

####

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

[src]

###

`impl Display for ParseIntError`

[src]

####

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

[src]

###

`impl Display for BorrowError`

[src]

####

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

[src]

###

`impl Display for EscapeDefault`

[src]

####

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

[src]

###

`impl Display for Utf8Lossy`

[src]

####

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

[src]

###

`impl Display for ToUppercase`

[src]

####

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

[src]

###

`impl Display for ParseFloatError`

[src]

####

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

[src]

###

`impl Display for NonZeroU64`

[src]

####

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

[src]

###

`impl Display for CharTryFromError`

[src]

####

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

[src]

###

`impl Display for ParseCharError`

[src]

####

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

[src]

###

`impl<'a, T> Display for Ref<'a, T> where T: Display + ?Sized,`

[src]

####

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

[src]

###

`impl Display for NonZeroU32`

[src]

####

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

[src]

###

`impl Display for NonZeroU16`

[src]

####

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

[src]

###

`impl<'a, T> Display for PinMut<'a, T> where T: Display + ?Sized,`

[src]

####

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

[src]

###

`impl<'a> Display for Location<'a>`

[src]

####

`fn fmt(&self, formatter: &mut Formatter) -> Result<(), Error>`

[src]

###

`impl Display for NonZeroU8`

[src]

####

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

[src]

###

`impl Display for BorrowMutError`

[src]

####

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

[src]

## Implementors

- `impl Display for u128` | [src]

- `impl Display for u64` | [src]

- `impl Display for Error` | [src]

- `impl Display for i32` | [src]

- `impl Display for isize` | [src]

- `impl<'a> Display for Arguments<'a>` | [src]

- `impl Display for u32` | [src]

- `impl Display for Utf8Error` | [src]

- `impl Display for CannotReallocInPlace` | [src]

- `impl Display for f64` | [src]

- `impl Display for !` | [src]

- `impl Display for i128` | [src]

- `impl Display for usize` | [src]

- `impl Display for f32` | [src]

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

- `impl Display for i64` | [src]

- `impl Display for bool` | [src]

- `impl Display for i16` | [src]

- `impl Display for i8` | [src]

- `impl Display for ParseBoolError` | [src]

- `impl Display for str` | [src]

- `impl Display for AllocErr` | [src]

- `impl Display for u8` | [src]

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

- `impl Display for char` | [src]

- `impl Display for u16` | [src]

- `impl Display for LayoutErr` | [src]

- `impl<T: Display + ?Sized> Display for Box<T>` | [src]

- `impl<T: Display + ?Sized> Display for PinBox<T>` | [src]

- `impl<T: ?Sized + Display> Display for Arc<T>` | [src]

- `impl<T: ?Sized + Display> Display for Rc<T>` | [src]

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

- `impl Display for FromUtf8Error` | [src]

- `impl Display for FromUtf16Error` | [src]

- `impl Display for String` | [src]

- `impl Display for ParseError` | [src]

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