Trait num::Num

pub trait Num: Zero + One + NumOps<Self, Self> + PartialEq<Self> {
    type FromStrRadixErr;
    fn from_str_radix(
        str: &str, 
        radix: u32
    ) -> Result<Self, Self::FromStrRadixErr>;
}

The base trait for numeric types, covering 0 and 1 values, comparisons, basic numeric operations, and string conversion.

Associated Types

type FromStrRadixErr

Required Methods

fn from_str_radix(str: &str, radix: u32) -> Result<Self, Self::FromStrRadixErr>

Convert from a string and radix <= 36.

Examples

use num_traits::Num;

let result = <i32 as Num>::from_str_radix("27", 10);
assert_eq!(result, Ok(27));

let result = <i32 as Num>::from_str_radix("foo", 10);
assert!(result.is_err());

Implementors

• impl Num for u32 type FromStrRadixErr = ParseIntError;
• impl Num for i16 type FromStrRadixErr = ParseIntError;
• impl Num for u64 type FromStrRadixErr = ParseIntError;
• impl Num for u8 type FromStrRadixErr = ParseIntError;
• impl<T> Num for Wrapping<T> where
    T: Num,
    Wrapping<T>: Mul<Wrapping<T>>,
    Wrapping<T>: Add<Wrapping<T>>,
    Wrapping<T>: Div<Wrapping<T>>,
    Wrapping<T>: Rem<Wrapping<T>>,
    Wrapping<T>: Sub<Wrapping<T>>,
    <Wrapping<T> as Add<Wrapping<T>>>::Output == Wrapping<T>,
    <Wrapping<T> as Sub<Wrapping<T>>>::Output == Wrapping<T>,
    <Wrapping<T> as Mul<Wrapping<T>>>::Output == Wrapping<T>,
    <Wrapping<T> as Div<Wrapping<T>>>::Output == Wrapping<T>,
    <Wrapping<T> as Rem<Wrapping<T>>>::Output == Wrapping<T>,  type FromStrRadixErr = <T as Num>::FromStrRadixErr;
• impl Num for f32 type FromStrRadixErr = ParseFloatError;
• impl Num for u16 type FromStrRadixErr = ParseIntError;
• impl Num for i64 type FromStrRadixErr = ParseIntError;
• impl Num for f64 type FromStrRadixErr = ParseFloatError;
• impl Num for usize type FromStrRadixErr = ParseIntError;
• impl Num for i8 type FromStrRadixErr = ParseIntError;
• impl Num for isize type FromStrRadixErr = ParseIntError;
• impl Num for i32 type FromStrRadixErr = ParseIntError;