Struct NotFoundError

pub struct NotFoundError<T>(pub PhantomData<T>);

Represents an error indicating that a value was not found.

This struct is generic over the type T that was not found.

Examples

use not_found_error::NotFoundError;

let error: NotFoundError<i32> = NotFoundError::new();
assert_eq!(error.to_string(), "i32 not found");

Tuple Fields

0: PhantomData<T>

Implementations

impl<T> NotFoundError<T>

pub fn new() -> Self

Creates a new NotFoundError.

Examples

use not_found_error::NotFoundError;

let error: NotFoundError<String> = NotFoundError::new();

pub fn result() -> Result<T>

Convenience method to automatically convert the error to a result.

Examples

use not_found_error::NotFoundError;

let result: Result<i32, NotFoundError<i32>> = NotFoundError::result();
assert!(result.is_err());

Trait Implementations

impl<T: Clone> Clone for NotFoundError<T>

fn clone(&self) -> NotFoundError<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for NotFoundError<T>

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

Formats the value using the given formatter.

impl<T> Default for NotFoundError<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T> Display for NotFoundError<T>

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

Formats the value using the given formatter.

impl<T: Debug> Error for NotFoundError<T>

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

Returns the lower-level source of this error, if any.

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.

impl<T: Hash> Hash for NotFoundError<T>

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

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: Ord> Ord for NotFoundError<T>

fn cmp(&self, other: &NotFoundError<T>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<T: PartialEq> PartialEq for NotFoundError<T>

fn eq(&self, other: &NotFoundError<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: PartialOrd> PartialOrd for NotFoundError<T>

fn partial_cmp(&self, other: &NotFoundError<T>) -> Option<Ordering>

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl<T: Copy> Copy for NotFoundError<T>

impl<T: Eq> Eq for NotFoundError<T>

impl<T> StructuralPartialEq for NotFoundError<T>