1.0.0[−][src]Trait frame_support::dispatch::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<'_> Display for Display<'_>
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impl Display for Ipv4Addr
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impl<T> Display for TryLockError<T>
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impl<T> Display for TrySendError<T>
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impl Display for AccessError
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impl Display for Backtrace
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impl Display for StripPrefixError
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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 SocketAddrV4
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impl Display for SocketAddrV6
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impl Display for TryRecvError
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impl Display for IpAddr
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impl Display for Error
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impl Display for SystemTimeError
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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 NulError
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impl Display for ExitStatus
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impl<'_, T> Display for MutexGuard<'_, T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T> Display for PoisonError<T>
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impl Display for RecvError
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impl Display for VarError
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impl Display for SocketAddr
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impl Display for Ipv6Addr
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impl<'_, T> Display for RwLockReadGuard<'_, T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl Display for IntoStringError
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impl Display for JoinPathsError
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impl<W> Display for IntoInnerError<W>
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impl Display for FromBytesWithNulError
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impl Display for ParseCharError
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impl Display for i16
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impl<'_, T> Display for RefMut<'_, T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl Display for u16
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impl Display for Utf8Error
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impl<T> Display for Wrapping<T> where
T: Display,
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T: Display,
impl Display for NonZeroIsize
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impl<'_, T> Display for &'_ T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl Display for char
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impl Display for LayoutErr
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impl Display for i64
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impl<'a> Display for EscapeDebug<'a>
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impl Display for ParseFloatError
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impl Display for NonZeroU64
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impl Display for DecodeUtf16Error
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impl Display for AllocErr
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impl<P> Display for Pin<P> where
P: Display,
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P: Display,
impl Display for NonZeroUsize
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impl Display for ParseIntError
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impl Display for u8
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impl Display for NonZeroU128
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impl Display for NonZeroI16
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impl Display for NonZeroI128
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impl Display for u128
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impl Display for BorrowError
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impl Display for u32
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impl Display for ToUppercase
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impl Display for f64
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impl Display for EscapeDefault
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impl Display for NonZeroI64
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impl Display for i32
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impl Display for BorrowMutError
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impl Display for usize
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impl Display for str
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impl<'a> Display for EscapeDefault<'a>
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impl Display for bool
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impl Display for NonZeroU8
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impl Display for CharTryFromError
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impl Display for NonZeroU32
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impl Display for i8
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impl<'_, T> Display for &'_ mut T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl Display for EscapeDebug
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impl<'_, T> Display for Ref<'_, T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl Display for ParseBoolError
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impl Display for EscapeDefault
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impl Display for NonZeroI32
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impl Display for ToLowercase
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impl Display for NonZeroU16
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impl Display for EscapeUnicode
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impl Display for TryFromSliceError
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impl Display for f32
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impl<'_> Display for PanicInfo<'_>
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impl Display for isize
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impl Display for i128
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impl Display for Utf8Lossy
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impl Display for Infallible
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impl Display for TryFromIntError
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impl Display for !
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impl Display for u64
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impl Display for NonZeroI8
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impl<'a> Display for EscapeUnicode<'a>
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impl<'_> Display for Location<'_>
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impl Display for String
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impl<T> Display for Box<T> where
T: Display + ?Sized,
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T: Display + ?Sized,
impl Display for FromUtf16Error
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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<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 Display for FromUtf8Error
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impl Display for TryReserveError
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impl<'a> Display for SymbolName<'a>
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impl<'a> Display for Demangle<'a>
impl Display for FieldSet
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impl<'a> Display for ValueSet<'a>
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impl Display for SetGlobalDefaultError
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impl Display for ParseLevelError
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impl Display for Level
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impl Display for Field
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impl<'a> Display for dyn Expected + 'a
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impl<'a> Display for Unexpected<'a>
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impl Display for Error
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impl Display for Error
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impl<T> Display for CapacityError<T>
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impl<A> Display for ArrayString<A> where
A: Array<Item = u8> + Copy,
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A: Array<Item = u8> + Copy,
impl Display for Error
impl<'a, R, G, T> Display for ReentrantMutexGuard<'a, R, G, T> where
G: 'a + GetThreadId,
R: 'a + RawMutex,
T: 'a + Display + ?Sized,
G: 'a + GetThreadId,
R: 'a + RawMutex,
T: 'a + Display + ?Sized,
impl<'a, R, T> Display for MappedMutexGuard<'a, R, T> where
R: 'a + RawMutex,
T: 'a + Display + ?Sized,
R: 'a + RawMutex,
T: 'a + Display + ?Sized,
impl<'a, R, T> Display for MappedRwLockWriteGuard<'a, R, T> where
R: 'a + RawRwLock,
T: 'a + Display + ?Sized,
R: 'a + RawRwLock,
T: 'a + Display + ?Sized,
impl<'a, R, T> Display for MappedRwLockReadGuard<'a, R, T> where
R: 'a + RawRwLock,
T: 'a + Display + ?Sized,
R: 'a + RawRwLock,
T: 'a + Display + ?Sized,
impl<'a, R, T> Display for RwLockUpgradableReadGuard<'a, R, T> where
R: 'a + RawRwLockUpgrade,
T: 'a + Display + ?Sized,
R: 'a + RawRwLockUpgrade,
T: 'a + Display + ?Sized,
impl<'a, R, T> Display for RwLockReadGuard<'a, R, T> where
R: 'a + RawRwLock,
T: 'a + Display + ?Sized,
R: 'a + RawRwLock,
T: 'a + Display + ?Sized,
impl<'a, R, T> Display for MutexGuard<'a, R, T> where
R: 'a + RawMutex,
T: 'a + Display + ?Sized,
R: 'a + RawMutex,
T: 'a + Display + ?Sized,
impl<'a, R, T> Display for RwLockWriteGuard<'a, R, T> where
R: 'a + RawRwLock,
T: 'a + Display + ?Sized,
R: 'a + RawRwLock,
T: 'a + Display + ?Sized,
impl<'a, R, G, T> Display for MappedReentrantMutexGuard<'a, R, G, T> where
G: 'a + GetThreadId,
R: 'a + RawMutex,
T: 'a + Display + ?Sized,
G: 'a + GetThreadId,
R: 'a + RawMutex,
T: 'a + Display + ?Sized,
impl Display for ExecutionError
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impl Display for ParseLevelError
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impl Display for SetLoggerError
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impl Display for LevelFilter
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impl Display for Level
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impl Display for AccountId32
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impl Display for Public
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impl Display for Public
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impl Display for CodeNotFound
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impl<'a> Display for HexDisplay<'a>
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impl Display for Public
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impl<A> Display for ArrayString<A> where
A: Array<Item = u8>,
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A: Array<Item = u8>,
impl<T> Display for CapacityError<T>
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impl Display for InvalidOutputSize
impl Display for BernoulliError
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impl Display for ReadError
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impl Display for WeightedError
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impl Display for Error
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impl Display for Error
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impl Display for Regex
impl Display for Regex
impl Display for Error
impl Display for Error
impl Display for CaseFoldError
impl Display for Error
impl Display for ErrorKind
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 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 UnicodeWordError
impl Display for Error
impl Display for Error
impl Display for ErrorKind
impl Display for Error
impl Display for Trap
impl Display for Error
impl Display for ValueType
impl Display for Instruction
impl Display for Error
impl Display for Error
impl<T> Display for Ratio<T> where
T: Display + Eq + One,
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T: Display + Eq + One,
fn fmt(&self, f: &mut Formatter) -> Result<(), Error>
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Renders as numer/denom
. If denom=1, renders as numer.
impl Display for ParseRatioError
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impl Display for ParseBigIntError
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impl Display for BigInt
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impl Display for BigUint
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impl Display for ParseFloatError
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impl Display for H512
impl Display for U512
impl Display for U256
impl Display for H256
impl Display for H160
impl Display for U128
impl Display for FromHexError
impl Display for MacError
impl Display for InvalidKeyLength
impl Display for SignatureError
impl Display for MultiSignatureStage
impl Display for Mnemonic
impl Display for MnemonicType
impl Display for ErrorKind
impl Display for Error
impl<E> Display for Compat<E> where
E: Display,
E: Display,
impl<D> Display for Context<D> where
D: 'static + Send + Sync + Display,
D: 'static + Send + Sync + Display,
impl<T> Display for SyncFailure<T> where
T: Display,
T: Display,
impl Display for Backtrace
impl<'a> Display for BytesOrWideString<'a>
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impl<'a> Display for SymbolName<'a>
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impl<'a> Display for Demangle<'a>
impl<I> Display for Recompositions<I> where
I: Clone + Iterator<Item = char>,
I: Clone + Iterator<Item = char>,
impl<I> Display for Decompositions<I> where
I: Clone + Iterator<Item = char>,
I: Clone + Iterator<Item = char>,
impl Display for Error
impl Display for Aborted
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impl<T, Item> Display for ReuniteError<T, Item>
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impl Display for SpawnError
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impl Display for TryRecvError
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impl Display for Canceled
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impl Display for SendError
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impl<T> Display for TrySendError<T>
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impl Display for EnterError
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impl Display for FromHexError
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impl Display for SignatureError
impl Display for Error
impl<T, E> Display for TrieError<T, E> where
E: MaybeDebug,
T: MaybeDebug,
E: MaybeDebug,
T: MaybeDebug,
impl<HO, CE> Display for Error<HO, CE> where
CE: Error,
HO: Debug,
CE: Error,
HO: Debug,
impl Display for RuntimeString
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impl<Block> Display for BlockId<Block> where
Block: Block,
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Block: Block,