Trait gstd::prelude::fmt::Display

1.0.0 · source ·
pub trait Display {
    // Required method
    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>;
}
Expand description

Format trait for an empty format, {}.

Implementing this trait for a type will automatically implement the ToString trait for the type, allowing the usage of the .to_string() method. Prefer implementing the Display trait for a type, rather than ToString.

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§

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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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impl Display for gcore::errors::Error

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impl Display for gstd::errors::Error

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impl Display for ErrorReplyReason

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impl Display for ExecutionError

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impl Display for ExtError

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impl Display for MemoryError

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impl Display for MessageError

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impl Display for ReplyCode

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impl Display for ReservationError

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impl Display for SignalCode

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impl Display for SimpleExecutionError

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impl Display for SimpleProgramCreationError

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impl Display for SuccessReplyReason

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impl Display for AsciiChar

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impl Display for Infallible

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impl Display for IpAddr

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impl Display for SocketAddr

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impl Display for VarError

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impl Display for ErrorKind

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impl Display for RecvTimeoutError

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impl Display for std::sync::mpsc::TryRecvError

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impl Display for hex::error::FromHexError

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impl Display for BernoulliError

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impl Display for WeightedError

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impl Display for bool

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impl Display for char

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impl Display for f32

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impl Display for f64

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impl Display for i8

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impl Display for i16

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impl Display for i32

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impl Display for i64

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impl Display for i128

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impl Display for isize

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impl Display for !

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impl Display for str

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impl Display for u8

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impl Display for u16

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impl Display for u32

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impl Display for u64

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impl Display for u128

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impl Display for usize

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impl Display for TryFromSliceError

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impl Display for gstd::prelude::ascii::EscapeDefault

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impl Display for BorrowError

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impl Display for BorrowMutError

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impl Display for CharTryFromError

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impl Display for DecodeUtf16Error

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impl Display for gstd::prelude::char::EscapeDebug

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impl Display for gstd::prelude::char::EscapeDefault

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impl Display for gstd::prelude::char::EscapeUnicode

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impl Display for ParseCharError

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impl Display for ToLowercase

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impl Display for ToUppercase

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impl Display for TryFromCharError

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impl Display for TryReserveError

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impl Display for FromBytesUntilNulError

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impl Display for FromBytesWithNulError

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impl Display for FromVecWithNulError

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impl Display for IntoStringError

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impl Display for NulError

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impl Display for NonZeroI8

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impl Display for NonZeroI16

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impl Display for NonZeroI32

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impl Display for NonZeroI64

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impl Display for NonZeroI128

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impl Display for NonZeroIsize

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impl Display for NonZeroU8

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impl Display for NonZeroU16

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impl Display for NonZeroU32

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impl Display for NonZeroU64

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impl Display for NonZeroU128

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impl Display for NonZeroUsize

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impl Display for ParseFloatError

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impl Display for ParseIntError

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impl Display for TryFromIntError

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impl Display for Location<'_>

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impl Display for PanicInfo<'_>

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impl Display for ParseBoolError

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impl Display for Utf8Error

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impl Display for FromUtf8Error

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impl Display for FromUtf16Error

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impl Display for String

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impl Display for TryFromFloatSecsError

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impl Display for LayoutError

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impl Display for core::alloc::AllocError

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impl Display for Ipv4Addr

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impl Display for Ipv6Addr

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

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impl Display for AddrParseError

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impl Display for SocketAddrV4

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impl Display for SocketAddrV6

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impl Display for Backtrace

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impl Display for JoinPathsError

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impl Display for WriterPanicked

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impl Display for std::io::error::Error

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impl Display for Display<'_>

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impl Display for StripPrefixError

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impl Display for ExitStatus

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impl Display for ExitStatusError

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impl Display for RecvError

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impl Display for AccessError

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impl Display for SystemTimeError

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impl Display for getrandom::error::Error

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impl Display for serde::de::value::Error

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impl Display for ReadError

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impl Display for rand_core::error::Error

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impl Display for Arguments<'_>

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impl Display for gstd::prelude::fmt::Error

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impl Display for Aborted

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impl Display for AllocError

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impl Display for Canceled

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impl Display for EnterError

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impl Display for Error

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impl Display for Error

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impl Display for Error

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impl Display for Error

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impl Display for Error

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impl Display for FromDecStrErr

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impl Display for FromHexError

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impl Display for FromHexError

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impl Display for FromStrRadixErr

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impl Display for H128

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impl Display for H160

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impl Display for H256

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impl Display for H384

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impl Display for H512

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impl Display for H768

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impl Display for NullPtrError

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impl Display for Path<PortableForm>

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impl Display for SendError

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impl Display for SpawnError

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impl Display for TryRecvError

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impl Display for U128

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impl Display for U256

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impl Display for U512

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

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impl<'a> Display for EscapeAscii<'a>

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

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

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

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

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impl<'a, K, V> Display for std::collections::hash::map::OccupiedError<'a, K, V>
where K: Debug, V: Debug,

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impl<'a, K, V, A> Display for gstd::prelude::collections::btree_map::OccupiedError<'a, K, V, A>
where K: Debug + Ord, V: Debug, A: Allocator + Clone,

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impl<'a, K, V, S, A> Display for gstd::prelude::collections::hash_map::OccupiedError<'a, K, V, S, A>
where K: Debug, V: Debug, A: Allocator,

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impl<'a, T, O> Display for Domain<'a, Const, T, O>
where O: BitOrder, T: BitStore,

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impl<A, O> Display for BitArray<A, O>
where O: BitOrder, A: BitViewSized,

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

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impl<E> Display for Report<E>
where E: Error,

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impl<F> Display for FormatterFn<F>
where F: Fn(&mut Formatter<'_>) -> Result<(), Error>,

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impl<M, T, O> Display for BitRef<'_, M, T, O>
where M: Mutability, T: BitStore, O: BitOrder,

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

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impl<R> Display for BitEnd<R>
where R: BitRegister,

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impl<R> Display for BitIdx<R>
where R: BitRegister,

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impl<R> Display for BitIdxError<R>
where R: BitRegister,

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impl<R> Display for BitMask<R>
where R: BitRegister,

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impl<R> Display for BitPos<R>
where R: BitRegister,

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impl<R> Display for BitSel<R>
where R: BitRegister,

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impl<T> Display for std::sync::mpsc::TrySendError<T>

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impl<T> Display for TryLockError<T>

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

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

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

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

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

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

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

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impl<T> Display for std::sync::mpsc::SendError<T>

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

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

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impl<T> Display for CapacityError<T>

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impl<T> Display for BitPtrError<T>
where T: BitStore,

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impl<T> Display for BitSpanError<T>
where T: BitStore,

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impl<T> Display for FmtBinary<T>
where T: Binary + Display,

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

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impl<T> Display for FmtList<T>
where &'a T: for<'a> IntoIterator, <&'a T as IntoIterator>::Item: for<'a> Display,

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impl<T> Display for FmtLowerExp<T>
where T: LowerExp + Display,

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impl<T> Display for FmtLowerHex<T>
where T: LowerHex + Display,

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impl<T> Display for FmtOctal<T>
where T: Octal + Display,

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impl<T> Display for FmtPointer<T>
where T: Pointer + Display,

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impl<T> Display for FmtUpperExp<T>
where T: UpperExp + Display,

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impl<T> Display for FmtUpperHex<T>
where T: UpperHex + Display,

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impl<T> Display for MisalignError<T>

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impl<T> Display for ReuniteError<T>

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impl<T> Display for ReuniteError<T>

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impl<T> Display for TrySendError<T>

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impl<T> Display for Unalign<T>
where T: Unaligned + Display,

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

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impl<T, A> Display for gstd::prelude::Box<T, A>
where T: Display + ?Sized, A: Allocator,

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

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

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impl<T, B> Display for Ref<B, [T]>
where B: ByteSlice, T: FromBytes, [T]: Display,

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impl<T, B> Display for Ref<B, T>
where B: ByteSlice, T: FromBytes + Display,

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impl<T, E> Display for TryChunksError<T, E>
where E: Display,

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impl<T, E> Display for TryReadyChunksError<T, E>
where E: Display,

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

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

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

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

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impl<W> Display for IntoInnerError<W>

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impl<const CAP: usize> Display for ArrayString<CAP>

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impl<const N: usize> Display for GetManyMutError<N>