Struct grep_matcher::NoError

pub struct NoError(_);

NoError provides an error type for matchers that never produce errors.

This error type implements the std::error::Error and fmt::Display traits for use in matcher implementations that can never produce errors.

The fmt::Debug and fmt::Display impls for this type panics.

Trait Implementations

impl Debug for NoError

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

Formats the value using the given formatter.

impl Display for NoError

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

Formats the value using the given formatter.

impl Eq for NoError

impl Error for NoError

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

impl From<NoError> for Error

fn from(_: NoError) -> Error

Performs the conversion.

impl PartialEq<NoError> for NoError

fn eq(&self, other: &NoError) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &NoError) -> bool

This method tests for !=.

impl StructuralEq for NoError

impl StructuralPartialEq for NoError