Function lexical::parse_lossy

pub fn parse_lossy<N: FromLexicalLossy, Bytes: AsRef<[u8]>>(
    bytes: Bytes
) -> Result<N>

High-level lossy conversion of decimal-encoded bytes to a number.

This function uses aggressive optimizations to avoid worst-case scenarios, and can return inaccurate results. For guaranteed accurate floats, use parse.

• bytes - Byte slice to convert to number.

Examples

// Get our error code.
fn err_code<T>(r: lexical::Result<T>) -> ErrorCode {
    r.err().unwrap().code
}

// String overloads
assert_eq!(lexical::parse_lossy::<f32, _>("0"), Ok(0.0));
assert_eq!(lexical::parse_lossy::<f32, _>("1.0"), Ok(1.0));
assert_eq!(lexical::parse_lossy::<f32, _>("1."), Ok(1.0));
assert_eq!(err_code(lexical::parse_lossy::<f32, _>("1a")), ErrorCode::InvalidDigit);

// Bytes overloads
assert_eq!(lexical::parse_lossy::<f32, _>(b"0"), Ok(0.0));
assert_eq!(lexical::parse_lossy::<f32, _>(b"1.0"), Ok(1.0));
assert_eq!(lexical::parse_lossy::<f32, _>(b"1."), Ok(1.0));
assert_eq!(err_code(lexical::parse_lossy::<f32, _>(b"1a")), ErrorCode::InvalidDigit);