Trait nom::lib::std::fmt::Display1.0.0[][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

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 RecvTimeoutError
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impl Display for VarError
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impl Display for SocketAddr
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impl Display for Ipv4Addr
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impl Display for StripPrefixError
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impl Display for Ipv6Addr
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impl Display for AccessError
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impl Display for IntoStringError
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impl<T> Display for PoisonError<T>
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impl Display for ExitStatus
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impl Display for TryRecvError
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impl Display for RecvError
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impl Display for JoinPathsError
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impl Display for SystemTimeError
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impl Display for Error
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impl<W> Display for IntoInnerError<W>
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impl Display for CharsError
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impl<'a, T> Display for MutexGuard<'a, T> where
    T: Display + ?Sized
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impl Display for SocketAddrV4
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impl Display for AddrParseError
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impl<T> Display for SendError<T>
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impl Display for FromBytesWithNulError
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impl<T> Display for TrySendError<T>
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impl<'a, T> Display for RwLockWriteGuard<'a, T> where
    T: Display + ?Sized
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impl<T> Display for TryLockError<T>
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impl<'a> Display for Display<'a>
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impl<'a, T> Display for RwLockReadGuard<'a, T> where
    T: Display + ?Sized
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impl Display for NulError
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impl Display for SocketAddrV6
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impl Display for IpAddr
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impl Display for BorrowError
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impl<'a, T> Display for &'a mut T where
    T: Display + ?Sized
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impl Display for bool
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impl<'a, T> Display for Ref<'a, T> where
    T: Display + ?Sized
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impl Display for i64
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impl Display for i32
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impl Display for ParseFloatError
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impl Display for NonZeroU128
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impl Display for DecodeUtf16Error
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impl Display for ParseCharError
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impl Display for !
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impl Display for char
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impl Display for isize
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impl Display for CannotReallocInPlace
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impl Display for ToLowercase
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impl Display for AllocErr
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impl<'a, T> Display for &'a T where
    T: Display + ?Sized
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impl Display for u16
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impl Display for EscapeDebug
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impl Display for EscapeUnicode
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impl Display for ToUppercase
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impl Display for i128
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impl Display for NonZeroU64
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impl Display for Utf8Lossy
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impl Display for f32
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impl Display for u8
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impl Display for NonZeroU16
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impl Display for u128
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impl<'a> Display for Location<'a>
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impl Display for BorrowMutError
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impl Display for NonZeroUsize
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impl Display for usize
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impl Display for u32
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impl Display for CharTryFromError
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impl Display for i16
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impl Display for str
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impl Display for EscapeDefault
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impl<'a> Display for PanicInfo<'a>
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impl<T> Display for Wrapping<T> where
    T: Display
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impl<'a, T> Display for RefMut<'a, T> where
    T: Display + ?Sized
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impl Display for f64
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impl Display for NonZeroU8
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impl Display for NonZeroU32
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impl Display for ParseIntError
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impl Display for TryFromIntError
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impl Display for TryFromSliceError
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impl Display for i8
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impl Display for LayoutErr
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impl Display for u64
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impl<'a, B> Display for Cow<'a, B> where
    B: Display + ToOwned + ?Sized,
    <B as ToOwned>::Owned: Display
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impl<T> Display for Arc<T> where
    T: Display + ?Sized
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impl<T> Display for Rc<T> where
    T: Display + ?Sized
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impl Display for Regex
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Shows the original regular expression.

impl Display for Regex
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Shows the original regular expression.

impl Display for Error
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impl Display for ErrorKind

impl Display for Error

impl Display for Hir

Print a display representation of this Hir.

The result of this is a valid regular expression pattern string.

This implementation uses constant stack space and heap space proportional to the size of the Hir.

impl Display for Error

impl Display for Ast

Print a display representation of this Ast.

This does not preserve any of the original whitespace formatting that may have originally been present in the concrete syntax from which this Ast was generated.

This implementation uses constant stack space and heap space proportional to the size of the Ast.

impl Display for Error

impl Display for ErrorKind

Implementors