Trait std::fmt::Octal 1.0.0
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[src]
pub trait Octal {
fn fmt(&self, &mut Formatter) -> Result<(), Error>;
}Format trait for the o character.
The Octal trait should format its output as a number in base-8.
The alternate flag, #, adds a 0o 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 '52' in octal assert_eq!(format!("{:o}", x), "52"); assert_eq!(format!("{:#o}", x), "0o52");Run
Implementing Octal on a type:
use std::fmt; struct Length(i32); impl fmt::Octal for Length { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { let val = self.0; write!(f, "{:o}", val) // delegate to i32's implementation } } let l = Length(9); println!("l as octal is: {:o}", l);Run
Required Methods
Implementors
impl<T> Octal for Wrapping<T> where T: Octalimpl Octal for isizeimpl Octal for usizeimpl Octal for i8impl Octal for u8impl Octal for i16impl Octal for u16impl Octal for i32impl Octal for u32impl Octal for i64impl Octal for u64impl Octal for i128impl Octal for u128impl<'a, T> Octal for &'a T where T: Octal + ?Sizedimpl<'a, T> Octal for &'a mut T where T: Octal + ?Sized