1.0.0[][src]Trait sp_std::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, }));

Implementations on Foreign Types

impl Display for Backtrace[src][]

impl Display for Ipv6Addr[src][]

[]

Write an Ipv6Addr, conforming to the canonical style described by RFC 5952.

impl Display for NulError[src][]

impl Display for Error[src][]

impl Display for StripPrefixError[src][]

impl Display for IntoStringError[src][]

impl Display for AddrParseError[src][]

impl<W> Display for IntoInnerError<W>[src][]

impl Display for ExitStatus[src][]

impl Display for SocketAddrV4[src][]

impl Display for Ipv4Addr[src][]

impl Display for FromVecWithNulError[src][]

impl Display for VarError[src][]

impl Display for FromBytesWithNulError[src][]

impl Display for SocketAddr[src][]

impl Display for IpAddr[src][]

impl Display for SocketAddrV6[src][]

impl Display for SystemTimeError[src][]

impl Display for AccessError[src][]

impl<'_> Display for Display<'_>[src][]

impl Display for JoinPathsError[src][]

impl Display for i8[src][]

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

impl Display for EscapeUnicode[src][]

impl<'_> Display for Location<'_>[src][]

impl Display for i32[src][]

impl Display for Utf8Lossy[src][]

impl Display for CharTryFromError[src][]

impl Display for u8[src][]

impl Display for char[src][]

impl Display for ![src][]

impl Display for i128[src][]

impl Display for i64[src][]

impl Display for ParseCharError[src][]

impl Display for ToLowercase[src][]

impl Display for isize[src][]

impl Display for u64[src][]

impl Display for EscapeDebug[src][]

impl Display for usize[src][]

impl Display for u128[src][]

impl Display for f64[src][]

impl Display for bool[src][]

impl Display for u16[src][]

impl<P> Display for Pin<P> where
    P: Display
[src][]

impl Display for str[src][]

impl Display for u32[src][]

impl Display for ToUppercase[src][]

impl Display for EscapeDefault[src][]

impl Display for EscapeDefault[src][]

impl<'_> Display for PanicInfo<'_>[src][]

impl Display for f32[src][]

impl Display for TryFromSliceError[src][]

impl Display for DecodeUtf16Error[src][]

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

impl Display for i16[src][]

impl Display for FromUtf16Error[src][]

impl Display for TryReserveError[src][]

impl Display for FromUtf8Error[src][]

impl Display for String[src][]

impl<'a> Display for Demangle<'a>[src][]

impl Display for DwEhPe[src][]

impl Display for DwLne[src][]

impl Display for DwId[src][]

impl Display for DwAddr[src][]

impl Display for Error[src][]

impl Display for DwMacro[src][]

impl Display for DwLns[src][]

impl Display for DwTag[src][]

impl Display for DwCc[src][]

impl Display for DwLle[src][]

impl Display for DwForm[src][]

impl Display for DwOrd[src][]

impl Display for DwChildren[src][]

impl Display for DwDefaulted[src][]

impl Display for DwAt[src][]

impl Display for DwInl[src][]

impl Display for DwOp[src][]

impl Display for DwAte[src][]

impl Display for DwRle[src][]

impl<R, Offset> Display for LineInstruction<R, Offset> where
    Offset: ReaderOffset,
    R: Reader<Offset = Offset>, 
[src][]

impl Display for DwUt[src][]

impl Display for DwLang[src][]

impl Display for DwLnct[src][]

impl Display for DwDs[src][]

impl Display for DwVirtuality[src][]

impl Display for DwIdx[src][]

impl Display for DwDsc[src][]

impl Display for DwAccess[src][]

impl Display for DwVis[src][]

impl Display for DwCfa[src][]

impl Display for DwEnd[src][]

impl Display for Error[]

Implementors

impl Display for Infallible[src][+]

impl Display for RecvTimeoutError[src][+]

impl Display for TryRecvError[src][+]

impl Display for AllocErr[src][+]

impl Display for LayoutErr[src][+]

impl Display for BorrowError[src][+]

impl Display for BorrowMutError[src][+]

impl Display for sp_std::fmt::Error[src][+]

impl Display for NonZeroI8[src][+]

impl Display for NonZeroI16[src][+]

impl Display for NonZeroI32[src][+]

impl Display for NonZeroI64[src][+]

impl Display for NonZeroI128[src][+]

impl Display for NonZeroIsize[src][+]

impl Display for NonZeroU8[src][+]

impl Display for NonZeroU16[src][+]

impl Display for NonZeroU32[src][+]

impl Display for NonZeroU64[src][+]

impl Display for NonZeroU128[src][+]

impl Display for NonZeroUsize[src][+]

impl Display for ParseFloatError[src][+]

impl Display for ParseIntError[src][+]

impl Display for TryFromIntError[src][+]

impl Display for ParseBoolError[src][+]

impl Display for Utf8Error[src][+]

impl Display for RecvError[src][+]

impl<'_> Display for Arguments<'_>[src][+]

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

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

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

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

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

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

impl<'a> Display for sp_std::str::EscapeDebug<'a>[src][+]

impl<'a> Display for sp_std::str::EscapeDefault<'a>[src][+]

impl<'a> Display for sp_std::str::EscapeUnicode<'a>[src][+]

impl<T> Display for TryLockError<T>[src][+]

impl<T> Display for TrySendError<T>[src][+]

impl<T> Display for Wrapping<T> where
    T: Display
[src][+]

impl<T> Display for Box<T> where
    T: Display + ?Sized
[src][+]

impl<T> Display for Rc<T> where
    T: Display + ?Sized
[src][+]

impl<T> Display for SendError<T>[src][+]

impl<T> Display for Arc<T> where
    T: Display + ?Sized
[src][+]

impl<T> Display for PoisonError<T>[src][+]

impl Display for Error

impl<A: Array<Item = u8>> Display for ArrayString<A>

impl<T> Display for CapacityError<T>

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

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

impl Display for ErrorKind

impl Display for Mnemonic

impl Display for MnemonicType

impl<O, T> Display for BitSlice<O, T> where
    O: BitOrder,
    T: BitStore, 

impl<O, T> Display for BitBox<O, T> where
    O: BitOrder,
    T: BitStore, 

impl<O, T> Display for BitVec<O, T> where
    O: BitOrder,
    T: BitStore, 

impl Display for Error

impl Display for MacError

impl Display for InvalidKeyLength

impl Display for InvalidOutputSize

impl Display for SignatureError

impl<L, R> Display for Either<L, R> where
    L: Display,
    R: Display, 

impl Display for Bloom

impl Display for H32

impl Display for H64

impl Display for H128

impl Display for H264

impl Display for H520

impl Display for U64

impl Display for Backtrace

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

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

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

impl Display for Error

impl Display for SendError

impl<T> Display for TrySendError<T>

impl Display for TryRecvError

impl Display for Canceled

impl Display for EnterError

impl Display for SpawnError

impl Display for Aborted

impl<T, Item> Display for ReuniteError<T, Item>

impl<T> Display for ReuniteError<T>

impl Display for Error

impl Display for DwUt

impl Display for DwCfa

impl Display for DwChildren

impl Display for DwTag

impl Display for DwAt

impl Display for DwForm

impl Display for DwAte

impl Display for DwLle

impl Display for DwDs

impl Display for DwEnd

impl Display for DwAccess

impl Display for DwVis

impl Display for DwVirtuality

impl Display for DwLang

impl Display for DwAddr

impl Display for DwId

impl Display for DwCc

impl Display for DwInl

impl Display for DwOrd

impl Display for DwDsc

impl Display for DwIdx

impl Display for DwDefaulted

impl Display for DwLns

impl Display for DwLne

impl Display for DwLnct

impl Display for DwMacro

impl Display for DwRle

impl Display for DwOp

impl Display for DwEhPe

impl<R, Offset> Display for LineInstruction<R, Offset> where
    R: Reader<Offset = Offset>,
    Offset: ReaderOffset, 

impl Display for Error

impl Display for FromHexError

impl<'a, I, F> Display for FormatWith<'a, I, F> where
    I: Iterator,
    F: FnMut(I::Item, &mut dyn FnMut(&dyn Display) -> Result) -> Result, 

impl<'a, I> Display for Format<'a, I> where
    I: Iterator,
    I::Item: Display, 

impl<'a, R: RawMutex + 'a, T: Display + ?Sized + 'a> Display for MutexGuard<'a, R, T>

impl<'a, R: RawMutex + 'a, T: Display + ?Sized + 'a> Display for MappedMutexGuard<'a, R, T>

impl<'a, R: RawMutex + 'a, G: GetThreadId + 'a, T: Display + ?Sized + 'a> Display for ReentrantMutexGuard<'a, R, G, T>

impl<'a, R: RawMutex + 'a, G: GetThreadId + 'a, T: Display + ?Sized + 'a> Display for MappedReentrantMutexGuard<'a, R, G, T>

impl<'a, R: RawRwLock + 'a, T: Display + ?Sized + 'a> Display for RwLockReadGuard<'a, R, T>

impl<'a, R: RawRwLock + 'a, T: Display + ?Sized + 'a> Display for RwLockWriteGuard<'a, R, T>

impl<'a, R: RawRwLockUpgrade + 'a, T: Display + ?Sized + 'a> Display for RwLockUpgradableReadGuard<'a, R, T>

impl<'a, R: RawRwLock + 'a, T: Display + ?Sized + 'a> Display for MappedRwLockReadGuard<'a, R, T>

impl<'a, R: RawRwLock + 'a, T: Display + ?Sized + 'a> Display for MappedRwLockWriteGuard<'a, R, T>

impl Display for Level

impl Display for LevelFilter

impl Display for SetLoggerError

impl Display for ParseLevelError

impl Display for BigInt

impl Display for BigUint

impl Display for ParseBigIntError

impl<T> Display for Ratio<T> where
    T: Display + Eq + One, 

impl Display for ParseRatioError

impl Display for ParseFloatError

impl Display for Error

impl Display for Error

impl Display for ValueType

impl Display for Instruction

impl Display for Error

impl Display for U128

impl Display for U256

impl Display for U512

impl Display for H160

impl Display for H256

impl Display for H512

impl Display for TokenStream

impl Display for TokenTree

impl Display for Group

impl Display for Punct

impl Display for Ident

impl Display for Literal

impl Display for BernoulliError

impl Display for WeightedError

impl Display for ReadError

impl Display for Error

impl Display for Error

impl Display for Regex

impl Display for Regex

impl Display for Error

impl Display for ErrorKind

impl Display for Ast

impl Display for Error

impl Display for Error

impl Display for ErrorKind

impl Display for Hir

impl Display for CaseFoldError

impl Display for UnicodeWordError

impl Display for DecoderError

impl<'a> Display for Rlp<'a>

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

impl Display for FromHexError

impl Display for MultiSignatureStage

impl Display for SignatureError

impl Display for Error

impl Display for Error

impl<'a> Display for Unexpected<'a>

impl<'a> Display for dyn Expected + 'a

impl Display for Public

impl Display for Public

impl Display for Public

impl Display for FixedI64

impl Display for FixedI128

impl Display for FixedU128

impl<'a> Display for HexDisplay<'a>

impl Display for Ss58AddressFormat

impl Display for AccountId32

impl Display for CryptoTypePublicPair

impl Display for Public

impl Display for Public

impl Display for Public

impl Display for Error

impl Display for CodeNotFound

impl Display for Error

impl<Block: BlockT> Display for BlockId<Block>

impl Display for RuntimeString

impl Display for MultiSigner

impl Display for ExecutionError

impl Display for Error

impl Display for RuntimeVersion

impl Display for Lifetime

impl Display for LitInt

impl Display for LitFloat

impl<'a> Display for ParseBuffer<'a>

impl Display for Error

impl Display for Value

impl Display for Datetime

impl Display for DatetimeParseError

impl Display for Error

impl Display for Error

impl Display for SetGlobalDefaultError

impl Display for Field

impl Display for FieldSet

impl<'a> Display for ValueSet<'a>

impl Display for Level

impl Display for ParseLevelError

impl<HO: Debug, CE: Error> Display for Error<HO, CE>

impl<T, E> Display for TrieError<T, E> where
    T: MaybeDebug,
    E: MaybeDebug, 

impl Display for FromDecStrErr

impl<I: Iterator<Item = char> + Clone> Display for Decompositions<I>

impl<I: Iterator<Item = char> + Clone> Display for Recompositions<I>

impl Display for Trap

impl Display for Error

impl Display for Error

impl Display for Error