1.0.0[−][src]Trait alloc::fmt::Octal
o formatting.
The Octal trait should format its output as a number in base-8.
For primitive signed integers (i8 to i128, and isize),
negative values are formatted as the two’s complement representation.
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"); assert_eq!(format!("{:o}", -16), "37777777760");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; fmt::Octal::fmt(&val, f) // delegate to i32's implementation } } let l = Length(9); assert_eq!(format!("l as octal is: {:o}", l), "l as octal is: 11"); assert_eq!(format!("l as octal is: {:#06o}", l), "l as octal is: 0o0011");Run
Required methods
Loading content...Implementations on Foreign Types
impl Octal for NonZeroI64[src]
impl Octal for NonZeroU8[src]
impl<T> Octal for Wrapping<T> where
T: Octal, [src]
T: Octal,
impl Octal for NonZeroI128[src]
impl Octal for NonZeroUsize[src]
impl Octal for NonZeroU32[src]
impl Octal for NonZeroI8[src]
impl Octal for NonZeroU16[src]
impl Octal for NonZeroU128[src]
impl Octal for NonZeroI16[src]
impl Octal for NonZeroU64[src]
impl Octal for NonZeroI32[src]
impl Octal for NonZeroIsize[src]
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Implementors
impl Octal for i8[src]
impl Octal for i16[src]
impl Octal for i32[src]
impl Octal for i64[src]
impl Octal for i128[src]
impl Octal for isize[src]
impl Octal for u8[src]
impl Octal for u16[src]
impl Octal for u32[src]
impl Octal for u64[src]
impl Octal for u128[src]
impl Octal for usize[src]
impl<'_, T> Octal for &'_ T where
T: Octal + ?Sized, [src]
T: Octal + ?Sized,
impl<'_, T> Octal for &'_ mut T where
T: Octal + ?Sized, [src]
T: Octal + ?Sized,