Struct regex_syntax::hir::CaseFoldError

pub struct CaseFoldError(_);

An error that occurs when Unicode-aware simple case folding fails.

This error can occur when the case mapping tables necessary for Unicode aware case folding are unavailable. This only occurs when the unicode-case feature is disabled. (The feature is enabled by default.)

Trait Implementations

impl Debug for CaseFoldError

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

Formats the value using the given formatter.

impl Display for CaseFoldError

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

Formats the value using the given formatter.

impl Error for CaseFoldError

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 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