Trait fungus::prelude::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 };

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

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

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Implementations on Foreign Types

impl Display for SocketAddrV6

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

impl<'_> Display for Display<'_>

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

impl<'_, T> Display for RwLockWriteGuard<'_, T> where
    T: Display + ?Sized, 

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

impl Display for RecvError

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

impl Display for FromBytesWithNulError

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

impl Display for RecvTimeoutError

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

impl Display for AddrParseError

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

impl<T> Display for TrySendError<T>

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

impl Display for StripPrefixError

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

impl<'_, T> Display for MutexGuard<'_, T> where
    T: Display + ?Sized, 

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

impl Display for SocketAddrV4

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

impl Display for NulError

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

impl Display for IntoStringError

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

impl Display for SystemTimeError

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

impl Display for IpAddr

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

impl Display for Backtrace

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

impl Display for SocketAddr

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

impl Display for ExitStatus

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

impl Display for AccessError

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

impl<T> Display for SendError<T>

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

impl<'_, T> Display for RwLockReadGuard<'_, T> where
    T: Display + ?Sized, 

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

impl<T> Display for TryLockError<T>

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

impl<T> Display for PoisonError<T>

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

impl Display for Ipv4Addr

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

impl Display for TryRecvError

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

impl Display for Ipv6Addr

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

impl Display for i16

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

impl Display for NonZeroIsize

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

impl Display for char

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

impl Display for ParseCharError

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

impl Display for NonZeroUsize

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

impl<P> Display for Pin<P> where
    P: Display, 

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

impl Display for DecodeUtf16Error

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

impl Display for i64

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

impl Display for ParseIntError

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

impl Display for ToUppercase

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

impl Display for u32

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

impl Display for NonZeroU16

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

impl Display for NonZeroI16

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

impl<'_, T> Display for &'_ mut T where
    T: Display + ?Sized, 

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

impl Display for Utf8Lossy

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

impl Display for CannotReallocInPlace

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

impl<'_> Display for PanicInfo<'_>

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

impl Display for isize

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

impl Display for f32

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

impl Display for str

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

impl<'_> Display for Location<'_>

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

impl Display for EscapeUnicode

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

impl Display for NonZeroU128

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

impl Display for BorrowMutError

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

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

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

impl Display for NonZeroI128

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

impl Display for NonZeroU64

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

impl Display for u64

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

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

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

impl Display for NonZeroU8

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

impl Display for ParseFloatError

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

impl Display for Infallible

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

impl Display for ToLowercase

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

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

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

impl Display for AllocErr

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

impl Display for EscapeDefault

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

impl Display for usize

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

impl Display for NonZeroI32

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

impl Display for u8

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

impl Display for NonZeroI64

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

impl<'_, T> Display for &'_ T where
    T: Display + ?Sized, 

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

impl Display for f64

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

impl Display for EscapeDebug

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

impl Display for u16

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

impl Display for i32

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

impl Display for NonZeroI8

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

impl Display for EscapeDefault

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

impl Display for NonZeroU32

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

impl Display for u128

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

impl Display for TryFromSliceError

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

impl Display for !

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

impl Display for i128

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

impl Display for i8

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

impl Display for BorrowError

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

impl Display for bool

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

impl Display for TryFromIntError

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

impl Display for LayoutErr

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

impl Display for CharTryFromError

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

impl Display for FromUtf16Error

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

impl Display for FromUtf8Error

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

impl<T> Display for Rc<T> where
    T: Display + ?Sized, 

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

impl<'_, B> Display for Cow<'_, B> where
    B: Display + ToOwned + ?Sized,
    <B as ToOwned>::Owned: Display, 

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

impl<T> Display for Arc<T> where
    T: Display + ?Sized, 

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

impl<T> Display for Box<T> where
    T: Display + ?Sized, 

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

impl Display for String

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

impl<'a> Display for SymbolName<'a>

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

impl<'a> Display for Demangle<'a>

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

impl<E> Display for Compat<E> where
    E: Display, 

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

impl<T> Display for SyncFailure<T> where
    T: Display, 

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

impl Display for Error

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

impl Display for Backtrace

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

impl<D> Display for Context<D> where
    D: 'static + Send + Sync + Display, 

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

impl<'a> Display for SymbolName<'a>

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

impl<'a> Display for BytesOrWideString<'a>

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

impl<'a> Display for Demangle<'a>

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

impl Display for NaiveDateTime

The Debug output of the naive date and time dt is same to dt.format("%Y-%m-%d %H:%M:%S%.f").

It should be noted that, for leap seconds not on the minute boundary, it may print a representation not distinguishable from non-leap seconds. This doesn't matter in practice, since such leap seconds never happened. (By the time of the first leap second on 1972-06-30, every time zone offset around the world has standardized to the 5-minute alignment.)

Example

use chrono::NaiveDate;

let dt = NaiveDate::from_ymd(2016, 11, 15).and_hms(7, 39, 24);
assert_eq!(format!("{}", dt), "2016-11-15 07:39:24");

Leap seconds may also be used.

let dt = NaiveDate::from_ymd(2015, 6, 30).and_hms_milli(23, 59, 59, 1_500);
assert_eq!(format!("{}", dt), "2015-06-30 23:59:60.500");

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

impl Display for FixedOffset

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

impl Display for NaiveDate

The Display output of the naive date d is same to d.format("%Y-%m-%d").

The string printed can be readily parsed via the parse method on str.

Example

use chrono::NaiveDate;

assert_eq!(format!("{}", NaiveDate::from_ymd(2015,  9,  5)), "2015-09-05");
assert_eq!(format!("{}", NaiveDate::from_ymd(   0,  1,  1)), "0000-01-01");
assert_eq!(format!("{}", NaiveDate::from_ymd(9999, 12, 31)), "9999-12-31");

ISO 8601 requires an explicit sign for years before 1 BCE or after 9999 CE.

assert_eq!(format!("{}", NaiveDate::from_ymd(   -1,  1,  1)),  "-0001-01-01");
assert_eq!(format!("{}", NaiveDate::from_ymd(10000, 12, 31)), "+10000-12-31");

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

impl<Tz> Display for Date<Tz> where
    Tz: TimeZone,
    <Tz as TimeZone>::Offset: Display, 

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

impl Display for Weekday

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

impl<'a, I, B> Display for DelayedFormat<I> where
    B: Borrow<Item<'a>>,
    I: Clone + Iterator<Item = B>, 

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

impl Display for ParseError

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

impl Display for Utc

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

impl Display for NaiveTime

The Display output of the naive time t is same to t.format("%H:%M:%S%.f").

The string printed can be readily parsed via the parse method on str.

It should be noted that, for leap seconds not on the minute boundary, it may print a representation not distinguishable from non-leap seconds. This doesn't matter in practice, since such leap seconds never happened. (By the time of the first leap second on 1972-06-30, every time zone offset around the world has standardized to the 5-minute alignment.)

Example

use chrono::NaiveTime;

assert_eq!(format!("{}", NaiveTime::from_hms(23, 56, 4)),              "23:56:04");
assert_eq!(format!("{}", NaiveTime::from_hms_milli(23, 56, 4, 12)),    "23:56:04.012");
assert_eq!(format!("{}", NaiveTime::from_hms_micro(23, 56, 4, 1234)),  "23:56:04.001234");
assert_eq!(format!("{}", NaiveTime::from_hms_nano(23, 56, 4, 123456)), "23:56:04.000123456");

Leap seconds may also be used.

assert_eq!(format!("{}", NaiveTime::from_hms_milli(6, 59, 59, 1_500)), "06:59:60.500");

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

impl<Tz> Display for DateTime<Tz> where
    Tz: TimeZone,
    <Tz as TimeZone>::Offset: Display, 

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

impl Display for Duration

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

impl Display for SteadyTime

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

impl Display for ParseError

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

impl<'a> Display for TmFmt<'a>

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

impl Display for OutOfRangeError

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

impl Display for ParseFloatError

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

impl Display for Level

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

impl Display for SetLoggerError

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

impl Display for LevelFilter

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

impl Display for ParseLevelError

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

impl Display for FromHexError

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

impl Display for Error

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

impl Display for WeightedError

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

impl Display for BernoulliError

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

impl Display for ReadError

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

impl Display for Error

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

impl Display for Error

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

impl Display for Error

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

impl Display for Regex

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

Shows the original regular expression.

impl Display for Error

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

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

impl Display for Error

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

impl Display for Error

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

impl Display for ErrorKind

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

impl Display for UnicodeWordError

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

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

impl Display for Error

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

impl Display for CaseFoldError

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

impl Display for ErrorKind

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

impl Display for Pattern

Show the original glob pattern.

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

impl Display for PatternError

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

impl Display for GlobError

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

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Implementors

impl Display for FileError

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

impl Display for IterError

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

impl Display for OsError

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

impl Display for PathError

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

impl Display for StringError

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

impl Display for UserError

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

impl Display for VarError

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

impl Display for JoinPathsError

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

impl Display for fungus::prelude::fmt::Error

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

impl Display for fungus::prelude::io::Error

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

impl Display for ParseBoolError

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

impl Display for Utf8Error

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

impl Display for ColoredString

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

impl Display for fungus::prelude::Regex

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

Shows the original regular expression.

impl<'_> Display for Arguments<'_>

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

impl<'a> Display for fungus::prelude::str::EscapeDebug<'a>

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

impl<'a> Display for fungus::prelude::str::EscapeDefault<'a>

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

impl<'a> Display for fungus::prelude::str::EscapeUnicode<'a>

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

impl<W> Display for IntoInnerError<W>

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

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