1.0.0[][src]Trait std::fmt::Binary

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

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

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;

        write!(f, "{:b}", val) // delegate to i32's implementation
    }
}

let l = Length(107);

println!("l as binary is: {:b}", l);Run

Required Methods

Formats the value using the given formatter.

Implementors

impl Binary for i128
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impl Binary for i16
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impl Binary for i32
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impl Binary for i64
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impl Binary for i8
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impl Binary for isize
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impl Binary for u128
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impl Binary for u16
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impl Binary for u32
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impl Binary for u64
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impl Binary for u8
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impl Binary for usize
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impl Binary for NonZeroU128
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impl Binary for NonZeroU16
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impl Binary for NonZeroU32
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impl Binary for NonZeroU64
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impl Binary for NonZeroU8
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impl Binary for NonZeroUsize
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impl<'_, T> Binary for &'_ T where
    T: Binary + ?Sized
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impl<'_, T> Binary for &'_ mut T where
    T: Binary + ?Sized
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impl<T> Binary for Wrapping<T> where
    T: Binary
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