Struct rug::rational::ParseRationalError

pub struct ParseRationalError { /* fields omitted */ }

An error which can be returned when parsing a Rational number.

See the Rational::parse_radix method for details on what strings are accepted.

Examples

use rug::{rational::ParseRationalError, Rational};
// This string is not a rational number.
let s = "something completely different (_!_!_)";
let error: ParseRationalError = match Rational::parse_radix(s, 4) {
    Ok(_) => unreachable!(),
    Err(error) => error,
};
println!("Parse error: {}", error);

Trait Implementations

impl Debug for ParseRationalError

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Display for ParseRationalError

fn fmt(&self, f: &mut Formatter) -> FmtResult

Formats the value using the given formatter.

impl Error for ParseRationalError

fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

if let Err(e) = "xc".parse::<u32>() { // Print e itself, no need for description(). eprintln!("Error: {}", e); }

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

fn cause(&self) -> Option<&dyn Error>

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting