pub trait Binary {
// Required method
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>;
}Expand description
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§
1.0.0 · Sourcefn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
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 Mode
impl Binary for OFlags
impl Binary for OpCodeFlag
impl Binary for RecvFlags
impl Binary for SendFlags
impl Binary for compio::driver::op::SpliceFlags
impl Binary for bf16
Available on non-SPIR-V only.
impl Binary for f16
Available on non-SPIR-V only.