Function parse_i128

pub const fn parse_i128(s: &str) -> Result<i128, ParseIntError>

Parses a i128 from a &str.

This returns an Err if the string would not successfully .parse() into a i128.

To parse a i128 from only part of a string, you can use Parser::parse_i128.

Const stabilization

The equivalent std function, was const-stabilized in Rust 1.82.0.

Example

use konst::{
    primitive::{ParseIntResult, parse_i128},
    unwrap_ctx,
};

const I: ParseIntResult<i128> = parse_i128("1234");

assert_eq!(I, Ok(1234));
assert_eq!(parse_i128("123"), Ok(123));
assert_eq!(parse_i128("0"), Ok(0));
assert_eq!(parse_i128("-1"), Ok(-1));

// This is how you can unwrap integers parsed from strings, at compile-time.
const I2: i128 = unwrap_ctx!(parse_i128("1234"));
assert_eq!(I2, 1234);

assert!(parse_i128("100A").is_err());
assert!(parse_i128("-A").is_err());
assert!(parse_i128("-").is_err());