Trait Binary 

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

b formatting.

The Binary trait should format its output as a number in binary.

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

The alternate flag, #, adds a 0b 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 '101010' in binary

assert_eq!(format!("{x:b}"), "101010");
assert_eq!(format!("{x:#b}"), "0b101010");

assert_eq!(format!("{:b}", -16), "11111111111111111111111111110000");

Implementing Binary on a type:

use std::fmt;

struct Length(i32);

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

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

let l = Length(107);

assert_eq!(format!("l as binary is: {l:b}"), "l as binary is: 1101011");

assert_eq!(
    // Note that the `0b` prefix added by `#` is included in the total width, so we
    // need to add two to correctly display all 32 bits.
    format!("l as binary is: {l:#034b}"),
    "l as binary is: 0b00000000000000000000000001101011"
);

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 Binary for i8

impl Binary for i16

impl Binary for i32

impl Binary for i64

impl Binary for i128

impl Binary for isize

impl Binary for u8

impl Binary for u16

impl Binary for u32

impl Binary for u64

impl Binary for u128

impl Binary for usize

impl Binary for DrawFlags

impl Binary for DrawListFlags

impl Binary for BackendFlags

impl Binary for ButtonFlags

impl Binary for ColorEditFlags

impl Binary for ComboBoxFlags

impl Binary for ConfigFlags

impl Binary for DragDropFlags

impl Binary for FontAtlasFlags

impl Binary for InputTextCallback

impl Binary for InputTextFlags

impl Binary for InputTextMultilineCallback

impl Binary for ItemHoveredFlags

impl Binary for JoystickHats

impl Binary for Modifiers

impl Binary for SelectableFlags

impl Binary for SliderFlags

impl Binary for TabBarFlags

impl Binary for TabItemFlags

impl Binary for TreeNodeFlags

impl Binary for WindowFlags

impl Binary for WindowFocusedFlags

impl Binary for WindowHoveredFlags

impl Binary for bf16

Available on non-target_arch=spirv only.

impl Binary for f16

Available on non-target_arch=spirv only.

impl Binary for BigInt

impl Binary for BigUint

impl Binary for Transformations

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

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

impl<O> Binary for I16<O>

where O: ByteOrder,

impl<O> Binary for I32<O>

where O: ByteOrder,

impl<O> Binary for I64<O>

where O: ByteOrder,

impl<O> Binary for I128<O>

where O: ByteOrder,

impl<O> Binary for Isize<O>

where O: ByteOrder,

impl<O> Binary for U16<O>

where O: ByteOrder,

impl<O> Binary for U32<O>

where O: ByteOrder,

impl<O> Binary for U64<O>

where O: ByteOrder,

impl<O> Binary for U128<O>

where O: ByteOrder,

impl<O> Binary for Usize<O>

where O: ByteOrder,

impl<T> Binary for &T

where T: Binary + ?Sized,

impl<T> Binary for &mut T

where T: Binary + ?Sized,

impl<T> Binary for NonZero<T>

where T: ZeroablePrimitive + Binary,

impl<T> Binary for Saturating<T>

where T: Binary,

impl<T> Binary for Wrapping<T>

where T: Binary,

impl<T> Binary for Ratio<T>

where T: Binary + Clone + Integer,