Trait tendermint::consensus::state::fmt::UpperHex 1.0.0[−][src]
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 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 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: {:X}", l), "l as hex is: 7FFFFFFF"); assert_eq!(format!("l as hex is: {:#010X}", l), "l as hex is: 0x7FFFFFFF");
Required methods
pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
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Formats the value using the given formatter.
Implementations on Foreign Types
impl UpperHex for NonZeroUsize
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impl UpperHex for NonZeroI32
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impl<'_, T> UpperHex for &'_ mut T where
T: UpperHex + ?Sized,
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T: UpperHex + ?Sized,
impl UpperHex for i128
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impl<'_, T> UpperHex for &'_ T where
T: UpperHex + ?Sized,
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T: UpperHex + ?Sized,
impl UpperHex for u16
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impl UpperHex for usize
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impl UpperHex for NonZeroI128
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impl UpperHex for i16
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impl UpperHex for i32
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impl UpperHex for NonZeroI8
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impl UpperHex for NonZeroU128
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impl<T> UpperHex for Wrapping<T> where
T: UpperHex,
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T: UpperHex,
impl UpperHex for isize
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impl UpperHex for u64
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impl UpperHex for NonZeroU32
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impl UpperHex for i64
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impl UpperHex for NonZeroU64
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impl UpperHex for i8
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impl UpperHex for NonZeroI64
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impl UpperHex for NonZeroI16
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impl UpperHex for u8
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impl UpperHex for NonZeroU8
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impl UpperHex for NonZeroIsize
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impl UpperHex for NonZeroU16
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impl UpperHex for u32
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impl UpperHex for u128
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impl UpperHex for Bytes
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impl UpperHex for BytesMut
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impl<T> UpperHex for GenericArray<u8, T> where
T: ArrayLength<u8> + Add<T>,
<T as Add<T>>::Output: ArrayLength<u8>,
T: ArrayLength<u8> + Add<T>,
<T as Add<T>>::Output: ArrayLength<u8>,
impl<A> UpperHex for ArrayVec<A> where
A: Array,
<A as Array>::Item: UpperHex,
A: Array,
<A as Array>::Item: UpperHex,
impl<'s, T> UpperHex for SliceVec<'s, T> where
T: UpperHex,
T: UpperHex,
impl<A> UpperHex for TinyVec<A> where
A: Array,
<A as Array>::Item: UpperHex,
A: Array,
<A as Array>::Item: UpperHex,
impl<'_, T> UpperHex for Domain<'_, T> where
T: BitStore,
T: BitStore,
impl<O, T> UpperHex for BitSlice<O, T> where
T: BitStore,
O: BitOrder,
T: BitStore,
O: BitOrder,
Render the contents of a BitSlice
in a numeric format.
These implementations render the bits of memory contained in a
BitSlice
as one of the three numeric bases that the Rust format
system supports:
Binary
renders each bit individually as0
or1
,Octal
renders clusters of three bits as the numbers0
through7
,- and
UpperHex
andLowerHex
render clusters of four bits as the numbers0
through9
andA
throughF
.
The formatters produce a “word” for each element T
of memory. The
chunked formats (octal and hexadecimal) operate somewhat peculiarly:
they show the semantic value of the memory, as interpreted by the
ordering parameter’s implementation rather than the raw value of
memory you might observe with a debugger. In order to ease the
process of expanding numbers back into bits, each digit is grouped to
the right edge of the memory element. So, for example, the byte
0xFF
would be rendered in as 0o377
rather than 0o773
.
Rendered words are chunked by memory elements, rather than by as clean as possible a number of digits, in order to aid visualization of the slice’s place in memory.
impl<O, V> UpperHex for BitArray<O, V> where
V: BitView,
O: BitOrder,
V: BitView,
O: BitOrder,
impl<T> UpperHex for FmtOctal<T> where
T: Octal + UpperHex,
T: Octal + UpperHex,
impl<T> UpperHex for FmtBinary<T> where
T: Binary + UpperHex,
T: Binary + UpperHex,
impl<T> UpperHex for FmtUpperExp<T> where
T: UpperExp + UpperHex,
T: UpperExp + UpperHex,
impl<T> UpperHex for FmtDisplay<T> where
T: Display + UpperHex,
T: Display + UpperHex,
impl<T> UpperHex for FmtUpperHex<T> where
T: UpperHex,
T: UpperHex,
impl<T> UpperHex for FmtLowerHex<T> where
T: LowerHex + UpperHex,
T: LowerHex + UpperHex,
impl<T> UpperHex for FmtPointer<T> where
T: Pointer + UpperHex,
T: Pointer + UpperHex,
impl<T> UpperHex for FmtLowerExp<T> where
T: LowerExp + UpperHex,
Loading content...T: LowerExp + UpperHex,