Trait nom::lib::std::fmt::LowerHex

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

[−] Expand description

x formatting.

The LowerHex trait should format its output as a number in hexadecimal, with a through f in lower 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 x = 42; // 42 is '2a' in hex

assert_eq!(format!("{:x}", x), "2a");
assert_eq!(format!("{:#x}", x), "0x2a");

assert_eq!(format!("{:x}", -16), "fffffff0");

Implementing LowerHex on a type:

use std::fmt;

struct Length(i32);

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

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

let l = Length(9);

assert_eq!(format!("l as hex is: {:x}", l), "l as hex is: 9");

assert_eq!(format!("l as hex is: {:#010x}", l), "l as hex is: 0x00000009");

Required methods

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

Formats the value using the given formatter.

Implementations on Foreign Types

impl<'_, T> LowerHex for &'_ T where
    T: LowerHex + ?Sized, 

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

impl LowerHex for i8

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

impl<'_, T> LowerHex for &'_ mut T where
    T: LowerHex + ?Sized, 

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

impl LowerHex for isize

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

impl LowerHex for NonZeroI64

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

impl LowerHex for u8

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

impl LowerHex for i16

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

impl LowerHex for i128

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

impl LowerHex for u16

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

impl LowerHex for i64

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

impl LowerHex for NonZeroI32

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

impl LowerHex for NonZeroI128

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

impl LowerHex for u64

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

impl LowerHex for NonZeroU16

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

impl LowerHex for NonZeroU128

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

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

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

impl LowerHex for NonZeroUsize

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

impl LowerHex for NonZeroU8

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

impl LowerHex for u32

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

impl LowerHex for NonZeroI8

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

impl LowerHex for NonZeroU64

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

impl LowerHex for NonZeroU32

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

impl LowerHex for i32

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

impl LowerHex for NonZeroIsize

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

impl LowerHex for u128

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

impl LowerHex for usize

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

impl LowerHex for NonZeroI16

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

Implementors

impl<T: ArrayLength<u8>> LowerHex for GenericArray<u8, T> where     T: Add<T>,     <T as Add<T>>::Output: ArrayLength<u8>,

impl LowerHex for Modifiers

impl LowerHex for JoystickHats

impl LowerHex for MapReadFlags

impl LowerHex for MapWriteFlags

impl LowerHex for MapReadWriteFlags

impl LowerHex for bf16

impl LowerHex for f16

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

impl<N, R: Dim, C: Dim, S> LowerHex for Matrix<N, R, C, S> where     N: Scalar + LowerHex,     S: Storage<N, R, C>,     DefaultAllocator: Allocator<usize, R, C>,

impl LowerHex for CollisionObjectUpdateFlags

impl LowerHex for HeightFieldCellStatus

impl<T> LowerHex for Complex<T> where     T: LowerHex + Num + PartialOrd + Clone,

impl<T: LowerHex + Clone + Integer> LowerHex for Ratio<T>

impl LowerHex for U128

impl LowerHex for U160

impl LowerHex for U224

impl LowerHex for U256

impl LowerHex for U384

impl LowerHex for U512

impl LowerHex for U520

impl LowerHex for U1024

impl LowerHex for U2048

impl LowerHex for U4096

impl LowerHex for Transformations

impl LowerHex for RootMotionRemove

impl LowerHex for BoxFlags

impl LowerHex for TextureCreationFlags

impl LowerHex for BoneFlags

impl LowerHex for KeyModifiers

impl LowerHex for Flags

impl LowerHex for Flags

impl LowerHex for DriverTargetFlags

impl LowerHex for DriverVarFlag

impl LowerHex for ArmatureDeformFlag

impl LowerHex for Flag

impl LowerHex for Flags

impl LowerHex for BlockFlags