Trait UpperHex

pub trait UpperHex {
    // Required method
    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error> ;
}

core X formatting.

Re-exported from core::fmt:: .

---

X formatting.

The UpperHex trait should format its output as a number in hexadecimal, with A through F in upper case.

For primitive signed integers (i8 to i128, and isize), negative values are formatted as the two’s complement representation.

The alternate flag, #, adds a 0x in front of the output.

For more information on formatters, see the module-level documentation.

Examples

Basic usage with i32:

let y = 42; // 42 is '2A' in hex

assert_eq!(format!("{y:X}"), "2A");
assert_eq!(format!("{y:#X}"), "0x2A");

assert_eq!(format!("{:X}", -16), "FFFFFFF0");

Implementing UpperHex on a type:

use std::fmt;

struct Length(i32);

impl fmt::UpperHex for Length {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        let val = self.0;

        fmt::UpperHex::fmt(&val, f) // delegate to i32's implementation
    }
}

let l = Length(i32::MAX);

assert_eq!(format!("l as hex is: {l:X}"), "l as hex is: 7FFFFFFF");

assert_eq!(format!("l as hex is: {l:#010X}"), "l as hex is: 0x7FFFFFFF");

Required Methods

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

Formats the value using the given formatter.

Errors

This function should return Err if, and only if, the provided Formatter returns Err. String formatting is considered an infallible operation; this function only returns a Result because writing to the underlying stream might fail and it must provide a way to propagate the fact that an error has occurred back up the stack.

Implementors

impl UpperHex for i8

impl UpperHex for i16

impl UpperHex for i32

impl UpperHex for i64

impl UpperHex for i128

impl UpperHex for isize

impl UpperHex for u8

impl UpperHex for u16

impl UpperHex for u32

impl UpperHex for u64

impl UpperHex for u128

impl UpperHex for usize

impl UpperHex for KeyEventState

impl UpperHex for KeyModifiers

impl UpperHex for KeyboardEnhancementFlags

impl UpperHex for FileAccess

impl UpperHex for Root

impl UpperHex for FileChooserType

impl UpperHex for FileDialogOptions

impl UpperHex for LineStyle

impl UpperHex for Align

impl UpperHex for CallbackTrigger

impl UpperHex for Damage

impl UpperHex for devela::_dep::fltk::enums::Mode

impl UpperHex for Shortcut

impl UpperHex for GridAlign

impl UpperHex for AnimGifImageFlags

impl UpperHex for MenuFlag

impl UpperHex for Attrib

impl UpperHex for CharFlags

impl UpperHex for OutFlags

impl UpperHex for BigInt

impl UpperHex for devela::_dep::rustix::event::epoll::CreateFlags

impl UpperHex for EventfdFlags

impl UpperHex for PollFlags

impl UpperHex for devela::_dep::rustix::fs::inotify::CreateFlags

impl UpperHex for ReadFlags

impl UpperHex for WatchFlags

impl UpperHex for Access

impl UpperHex for AtFlags

impl UpperHex for FallocateFlags

impl UpperHex for FdFlags

impl UpperHex for IFlags

impl UpperHex for MemfdFlags

impl UpperHex for devela::_dep::rustix::fs::Mode

impl UpperHex for MountFlags

impl UpperHex for MountPropagationFlags

impl UpperHex for OFlags

impl UpperHex for RenameFlags

impl UpperHex for ResolveFlags

impl UpperHex for SealFlags

impl UpperHex for StatVfsMountFlags

impl UpperHex for StatxFlags

impl UpperHex for UnmountFlags

impl UpperHex for XattrFlags

impl UpperHex for DupFlags

impl UpperHex for ReadWriteFlags

impl UpperHex for EventFlags

impl UpperHex for IoringAcceptFlags

impl UpperHex for IoringAsyncCancelFlags

impl UpperHex for IoringCqFlags

impl UpperHex for IoringCqeFlags

impl UpperHex for IoringEnterFlags

impl UpperHex for IoringFeatureFlags

impl UpperHex for IoringFsyncFlags

impl UpperHex for IoringMsgringFlags

impl UpperHex for IoringOpFlags

impl UpperHex for IoringPollFlags

impl UpperHex for IoringRecvFlags

impl UpperHex for IoringRegisterFlags

impl UpperHex for IoringRsrcFlags

impl UpperHex for IoringSendFlags

impl UpperHex for IoringSetupFlags

impl UpperHex for IoringSqFlags

impl UpperHex for IoringSqeFlags

impl UpperHex for IoringTimeoutFlags

impl UpperHex for RecvFlags

impl UpperHex for RecvmsgOutFlags

impl UpperHex for SendFlags

impl UpperHex for SocketFlags

impl UpperHex for devela::_dep::rustix::io_uring::SpliceFlags

impl UpperHex for MapFlags

impl UpperHex for MlockAllFlags

impl UpperHex for MlockFlags

impl UpperHex for MprotectFlags

impl UpperHex for MremapFlags

impl UpperHex for MsyncFlags

impl UpperHex for ProtFlags

impl UpperHex for UserfaultfdFlags

impl UpperHex for FsMountFlags

impl UpperHex for FsOpenFlags

impl UpperHex for FsPickFlags

impl UpperHex for MountAttrFlags

impl UpperHex for MoveMountFlags

impl UpperHex for OpenTreeFlags

impl UpperHex for SockaddrXdpFlags

impl UpperHex for XdpDescOptions

impl UpperHex for XdpOptionsFlags

impl UpperHex for XdpRingFlags

impl UpperHex for XdpUmemRegFlags

impl UpperHex for PipeFlags

impl UpperHex for devela::_dep::rustix::pipe::SpliceFlags

impl UpperHex for FloatingPointEmulationControl

impl UpperHex for FloatingPointExceptionMode

impl UpperHex for MembarrierQuery

impl UpperHex for PidfdFlags

impl UpperHex for PidfdGetfdFlags

impl UpperHex for SpeculationFeatureControl

impl UpperHex for SpeculationFeatureState

impl UpperHex for UnalignedAccessControl

impl UpperHex for WaitOptions

impl UpperHex for WaitidOptions

impl UpperHex for OpenptFlags

impl UpperHex for GetRandomFlags

impl UpperHex for ShmOFlags

impl UpperHex for ControlModes

impl UpperHex for InputModes

impl UpperHex for LocalModes

impl UpperHex for OutputModes

impl UpperHex for CapabilitiesSecureBits

impl UpperHex for CapabilityFlags

impl UpperHex for devela::_dep::rustix::thread::FutexFlags

impl UpperHex for TaggedAddressMode

impl UpperHex for ThreadNameSpaceType

impl UpperHex for UnshareFlags

impl UpperHex for TimerfdFlags

impl UpperHex for TimerfdTimerFlags

impl UpperHex for devela::_dep::sdl2::image::InitFlag

impl UpperHex for devela::_dep::sdl2::keyboard::Mod

impl UpperHex for devela::_dep::sdl2::messagebox::MessageBoxButtonFlag

impl UpperHex for devela::_dep::sdl2::messagebox::MessageBoxFlag

impl UpperHex for devela::_dep::sdl2::mixer::InitFlag

impl UpperHex for FontStyle

impl UpperHex for GlobFlags

impl UpperHex for devela::_dep::sdl3::keyboard::Mod

impl UpperHex for devela::_dep::sdl3::messagebox::MessageBoxButtonFlag

impl UpperHex for devela::_dep::sdl3::messagebox::MessageBoxFlag

impl UpperHex for Channels

impl UpperHex for f32x4

impl UpperHex for f32x8

impl UpperHex for f64x2

impl UpperHex for f64x4

impl UpperHex for i8x16

impl UpperHex for i8x32

impl UpperHex for i16x8

impl UpperHex for i16x16

impl UpperHex for i32x4

impl UpperHex for i32x8

impl UpperHex for i64x2

impl UpperHex for i64x4

impl UpperHex for u8x16

impl UpperHex for u16x8

impl UpperHex for u16x16

impl UpperHex for u32x4

impl UpperHex for u32x8

impl UpperHex for u64x2

impl UpperHex for u64x4

impl UpperHex for devela::_dep::winnow::Bytes

impl UpperHex for ExampleBitfield

Available on crate feature _bit_u8 and (doc or test) only.

impl UpperHex for ExampleBitfieldCustom

Available on crate feature _bit_u8 and (doc or test) only.

impl UpperHex for ExampleBitfieldExtra

Available on crate feature _bit_u8 and (doc or test) only.

impl UpperHex for ExampleEnumSet

Available on doc or test only.

impl UpperHex for char7

impl UpperHex for char8

impl UpperHex for char16

impl UpperHex for Braced

impl UpperHex for Hyphenated

impl UpperHex for Simple

impl UpperHex for Urn

impl UpperHex for Uuid

impl UpperHex for DrumFrame8

Available on crate feature audio only.

impl UpperHex for m128

impl UpperHex for m128d

impl UpperHex for m128i

impl UpperHex for m256

impl UpperHex for m256d

impl UpperHex for m256i

impl UpperHex for Bytes

impl UpperHex for BytesMut

impl UpperHex for EfdFlags

impl UpperHex for EpollCreateFlags

impl UpperHex for EpollFlags

impl UpperHex for EventMask

impl UpperHex for Flags

impl UpperHex for PortCap

impl UpperHex for PortType

impl UpperHex for Remove

impl UpperHex for Transformations

impl UpperHex for WatchMask

impl<'a, I> UpperHex for Format<'a, I>

where I: Iterator, <I as Iterator>::Item: UpperHex,

impl<'t, T, F, U> UpperHex for OptionFmtOrElse<'t, T, F>

where T: UpperHex, F: Fn() -> U, U: Display,

impl<'t, T, U> UpperHex for OptionFmtOr<'t, T, U>

where T: UpperHex, U: Display,

impl<BUF: DstBuf, DST> UpperHex for DstValue<DST, BUF>

where DST: UpperHex + ?Sized,

Available on crate feature unsafe_layout only.

impl<T> UpperHex for &T

where T: UpperHex + ?Sized,

impl<T> UpperHex for &mut T

where T: UpperHex + ?Sized,

impl<T> UpperHex for NonZero<T>

where T: ZeroablePrimitive + UpperHex,

impl<T> UpperHex for OptionFmt<'_, T>

where T: UpperHex,

impl<T> UpperHex for Saturating<T>

where T: UpperHex,

impl<T> UpperHex for Wrapping<T>

where T: UpperHex,

impl<T: UpperHex> UpperHex for Frac<T>

impl<T: UpperHex> UpperHex for Int<T>

impl<T: UpperHex> UpperHex for Bitwise<T>

impl<const V: i8> UpperHex for devela::_info::examples::niche::NonValueI8<V>

Available on doc or test only.

impl<const V: i8> UpperHex for devela::all::NonValueI8<V>

impl<const V: u8> UpperHex for NonValueU8<V>

impl<const V: u16> UpperHex for NonValueU16<V>