pub trait FromAscii: Sized {
type Err;
// Required method
fn from_ascii(s: &[u8]) -> Result<Self, Self::Err>;
}Expand description
A trait to abstract the idea of creating a new instance of a type from a ascii string.
It’s a near clone of standard FromStr trait.
Required Associated Types§
Required Methods§
Sourcefn from_ascii(s: &[u8]) -> Result<Self, Self::Err>
fn from_ascii(s: &[u8]) -> Result<Self, Self::Err>
Parses a ascii string s to return a value of this type.
If parsing succeeds, return the value inside Ok, otherwise
when the string is ill-formatted return an error specific to the
inside Err. The error type is specific to implementation of the trait.
§Examples
Basic usage with i32, a type that implements FromAscii:
use from_ascii::FromAscii;
let s = b"5";
let x = i32::from_ascii(s).unwrap();
assert_eq!(5, x);Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.