Enum Error

pub enum Error {
    MatchFailed,
    ParsingFailed(Box<dyn Error>),
}

The Error returned by sscanf.

Variants

MatchFailed

The Regex generated from the format string did not match the input

ParsingFailed(Box<dyn Error>)

One of the FromStr or FromScanf conversions failed

This variant usually indicates that a RegexRepresentation of a type allows too many values to be accepted. This cannot always be avoided without creating a ridiculously complex regex, and so this error is returned instead. In those cases, it is fine to treat this as an extension of MatchFailed.

The exact content of this error is only relevant when debugging custom implementations of FromStr or FromScanf.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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

Returns the underlying error if this is a ParsingFailed error.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

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

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

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

Provides type-based access to context intended for error reports.