Function btoi::btou
[−]
[src]
pub fn btou<I>(bytes: &[u8]) -> Result<I, ParseIntegerError> where
I: FromPrimitive + Zero + CheckedAdd + CheckedMul,
Converts a byte slice to an integer. Signs are not allowed.
Errors
Returns ParseIntegerError
for any of the following conditions:
bytes
is empty- not all characters of
bytes
are0-9
- the number overflows
I
Panics
Panics in the pathological case that there is no representation of 10
in I
.
Examples
assert_eq!(Ok(12345), btou(b"12345")); assert!(btou::<u8>(b"+1").is_err()); // only btoi allows signs assert!(btou::<u8>(b"256").is_err()); // overflow