[−][src]Function fraction::generic::read_generic_integer
pub fn read_generic_integer<T, F>(val: F) -> Option<(Sign, T)> where
F: GenericInteger + PartialOrd,
T: GenericInteger,
Builds integer of type T from another integer of type F in a generic way
Allows safe runtime conversions between integer types when it's not possible
statically. E.g: i8 -> u8
, u8 -> i8
, usize -> u8
or even BigUint -> u8
and so on.
Examples
use fraction::{Sign, generic::read_generic_integer}; assert_eq!((Sign::Plus, 127i8), read_generic_integer(127u8).unwrap()); assert_eq!((Sign::Minus, 128u8), read_generic_integer(-128i8).unwrap()); assert_eq!((Sign::Minus, 255u8), read_generic_integer(-255isize).unwrap());