Function lexical::try_parse_lossy [−][src]
pub fn try_parse_lossy<N: FromLexicalLossy, Bytes: AsRef<[u8]>>(
bytes: Bytes
) -> Result<N, Error>
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 try_parse
.
bytes
- Byte slice to convert to number.
Examples
// Create our error. let err = |u| ErrorKind::InvalidDigit(u).into(); // String overloads assert_eq!(lexical::try_parse_lossy::<f32, _>("0"), Ok(0.0)); assert_eq!(lexical::try_parse_lossy::<f32, _>("1.0"), Ok(1.0)); assert_eq!(lexical::try_parse_lossy::<f32, _>("1."), Ok(1.0)); assert_eq!(lexical::try_parse_lossy::<f32, _>("1a"), Err(err(1))); // Bytes overloads assert_eq!(lexical::try_parse_lossy::<f32, _>(b"0"), Ok(0.0)); assert_eq!(lexical::try_parse_lossy::<f32, _>(b"1.0"), Ok(1.0)); assert_eq!(lexical::try_parse_lossy::<f32, _>(b"1."), Ok(1.0)); assert_eq!(lexical::try_parse_lossy::<f32, _>(b"1a"), Err(err(1)));