1.0.0[−][src]Trait cron_clock::lib::std::fmt::Display
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, }));
Implementations on Foreign Types
impl<T> Display for TrySendError<T>
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impl Display for Error
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impl Display for Backtrace
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impl<'_> Display for Display<'_>
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impl Display for ExitStatus
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impl Display for RecvTimeoutError
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impl<'_, T> Display for RwLockWriteGuard<'_, T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl Display for FromBytesWithNulError
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impl<W> Display for IntoInnerError<W>
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impl Display for SystemTimeError
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impl Display for TryRecvError
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impl Display for AddrParseError
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impl<T> Display for TryLockError<T>
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impl Display for Ipv6Addr
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Write an Ipv6Addr, conforming to the canonical style described by RFC 5952.
impl Display for NulError
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impl Display for IpAddr
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impl Display for IntoStringError
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impl<T> Display for PoisonError<T>
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impl<'_, T> Display for RwLockReadGuard<'_, T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T> Display for SendError<T>
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impl Display for SocketAddr
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impl Display for JoinPathsError
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impl Display for SocketAddrV4
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impl Display for RecvError
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impl Display for SocketAddrV6
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impl Display for VarError
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impl Display for AccessError
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impl<'_, T> Display for MutexGuard<'_, T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl Display for StripPrefixError
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impl Display for Ipv4Addr
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impl<'_, T> Display for RefMut<'_, T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl Display for ParseCharError
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impl Display for u32
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impl Display for NonZeroIsize
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impl Display for ParseFloatError
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impl Display for NonZeroI64
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impl Display for i16
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impl Display for BorrowMutError
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impl Display for TryFromSliceError
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impl Display for NonZeroU64
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impl Display for ToLowercase
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impl<'_, T> Display for Ref<'_, T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl Display for u128
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impl Display for Utf8Lossy
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impl Display for NonZeroU8
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impl Display for ParseIntError
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impl Display for AllocErr
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impl<'_> Display for Location<'_>
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impl Display for f32
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impl Display for EscapeDefault
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impl Display for !
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impl Display for u8
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impl Display for EscapeDefault
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impl Display for NonZeroI16
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impl Display for BorrowError
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impl Display for EscapeUnicode
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impl<'_, T> Display for &'_ mut T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl Display for i8
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impl Display for f64
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impl<P> Display for Pin<P> where
P: Display,
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P: Display,
impl<'_, T> Display for &'_ T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl Display for NonZeroU32
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impl Display for str
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impl Display for CharTryFromError
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impl Display for NonZeroU128
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impl Display for u16
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impl Display for usize
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impl Display for i128
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impl Display for NonZeroI8
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impl Display for EscapeDebug
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impl Display for NonZeroUsize
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impl<'_> Display for PanicInfo<'_>
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impl Display for isize
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impl Display for NonZeroU16
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impl Display for TryFromIntError
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impl<T> Display for Wrapping<T> where
T: Display,
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T: Display,
impl Display for NonZeroI128
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impl Display for NonZeroI32
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impl Display for bool
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impl Display for i32
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impl Display for char
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impl Display for i64
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impl Display for LayoutErr
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impl Display for u64
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impl Display for ToUppercase
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impl Display for DecodeUtf16Error
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impl<T> Display for Rc<T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T> Display for Arc<T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<'_, B> Display for Cow<'_, B> where
B: Display + ToOwned + ?Sized,
<B as ToOwned>::Owned: Display,
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B: Display + ToOwned + ?Sized,
<B as ToOwned>::Owned: Display,
impl<'a> Display for SymbolName<'a>
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impl<'a> Display for Demangle<'a>
impl Display for SteadyTime
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impl Display for OutOfRangeError
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impl<'a> Display for TmFmt<'a>
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impl Display for ParseError
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impl Display for ParseFloatError
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impl<'a> Display for SymbolName<'a>
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impl<'a> Display for BytesOrWideString<'a>
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impl<'a> Display for Demangle<'a>
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Implementors
impl Display for Weekday
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impl Display for cron_clock::error::ErrorKind
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impl Display for cron_clock::example_generated::ErrorKind
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impl Display for cron_clock::example_generated::inner::ErrorKind
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impl Display for TryReserveError
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impl Display for Infallible
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impl Display for cron_clock::error::Error
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impl Display for cron_clock::example_generated::inner::Error
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impl Display for cron_clock::example_generated::Error
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impl Display for cron_clock::lib::std::fmt::Error
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impl Display for ParseBoolError
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impl Display for Utf8Error
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impl Display for FromUtf16Error
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impl Display for FromUtf8Error
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impl Display for String
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impl Display for Duration
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impl Display for FixedOffset
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impl Display for NaiveDate
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The Display
output of the naive date d
is the same as
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");
impl Display for NaiveDateTime
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The Debug
output of the naive date and time dt
is the same as
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");
impl Display for NaiveTime
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The Display
output of the naive time t
is the same as
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");
impl Display for cron_clock::ParseError
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impl Display for Utc
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impl<'_> Display for Arguments<'_>
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impl<'a> Display for cron_clock::lib::std::str::EscapeDebug<'a>
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impl<'a> Display for cron_clock::lib::std::str::EscapeDefault<'a>
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impl<'a> Display for cron_clock::lib::std::str::EscapeUnicode<'a>
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impl<'a> Display for CompleteStr<'a>
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impl<'a, I, B> Display for DelayedFormat<I> where
B: Borrow<Item<'a>>,
I: Clone + Iterator<Item = B>,
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B: Borrow<Item<'a>>,
I: Clone + Iterator<Item = B>,
impl<'a, T> Display for cron_clock::Display<'a, T> where
T: ChainedError,
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T: ChainedError,
impl<I, E> Display for Err<I, E> where
E: Debug,
I: Debug,
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E: Debug,
I: Debug,
impl<T> Display for Box<T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<Tz> Display for Date<Tz> where
Tz: TimeZone,
<Tz as TimeZone>::Offset: Display,
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Tz: TimeZone,
<Tz as TimeZone>::Offset: Display,
impl<Tz> Display for DateTime<Tz> where
Tz: TimeZone,
<Tz as TimeZone>::Offset: Display,
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Tz: TimeZone,
<Tz as TimeZone>::Offset: Display,