Struct libhandy4::Error

pub struct Error(_);

A generic error capable of representing various error domains (types).

Implementations

impl Error

pub fn new<T>(error: T, message: &str) -> Error where
    T: ErrorDomain, 

Creates an error with supplied error enum variant and message.

pub fn is<T>(&self) -> bool where
    T: ErrorDomain, 

Checks if the error domain matches T.

pub fn kind<T>(&self) -> Option<T> where
    T: ErrorDomain, 

Tries to convert to a specific error enum.

Returns Some if the error belongs to the enum's error domain and None otherwise.

Examples

if let Some(file_error) = error.kind::<FileError>() {
    match file_error {
        FileError::Exist => ...
        FileError::Isdir => ...
        ...
    }
}

match error.kind::<FileError>() {
    Some(FileError::Exist) => ...
    Some(FileError::Isdir) => ...
    ...
}

Trait Implementations

impl Clone for Error

pub fn clone(&self) -> Error

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Eq for Error

impl Error for Error

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

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

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

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

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

pub fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl Hash for Error

pub fn hash<__H>(&self, state: &mut __H) where
    __H: Hasher, 

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl Ord for Error

pub fn cmp(&self, other: &Error) -> Ordering

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<Error> for Error

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

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

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

This method tests for !=.

impl PartialOrd<Error> for Error

pub fn partial_cmp(&self, other: &Error) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

pub fn lt(&self, other: &Error) -> bool

This method tests less than (for self and other) and is used by the < operator.

pub fn le(&self, other: &Error) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

pub fn gt(&self, other: &Error) -> bool

This method tests greater than (for self and other) and is used by the > operator.

pub fn ge(&self, other: &Error) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Send for Error

impl StaticType for Error

pub fn static_type() -> Type

Returns the type identifier of Self.

impl StructuralEq for Error

impl StructuralPartialEq for Error

impl Sync for Error