Struct nannou::rand::Error [−][src]
pub struct Error { /* fields omitted */ }
Error type of random number generators
In order to be compatible with std
and no_std
, this type has two
possible implementations: with std
a boxed Error
trait object is stored,
while with no_std
we merely store an error code.
Implementations
impl Error
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pub fn new<E>(err: E) -> Error where
E: Into<Box<dyn Error + 'static + Sync + Send, Global>>,
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E: Into<Box<dyn Error + 'static + Sync + Send, Global>>,
Construct from any type supporting std::error::Error
Available only when configured with std
.
See also From<NonZeroU32>
, which is available with and without std
.
pub fn inner(&self) -> &(dyn Error + 'static + Sync + Send)
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Reference the inner error (std
only)
When configured with std
, this is a trivial operation and never
panics. Without std
, this method is simply unavailable.
pub fn take_inner(self) -> Box<dyn Error + 'static + Sync + Send, Global>
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Unwrap the inner error (std
only)
When configured with std
, this is a trivial operation and never
panics. Without std
, this method is simply unavailable.
pub const INTERNAL_START: u32
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Codes below this point represent OS Errors (i.e. positive i32 values).
Codes at or above this point, but below Error::CUSTOM_START
are
reserved for use by the rand
and getrandom
crates.
pub const CUSTOM_START: u32
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Codes at or above this point can be used by users to define their own custom errors.
pub fn raw_os_error(&self) -> Option<i32>
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Extract the raw OS error code (if this error came from the OS)
This method is identical to std::io::Error::raw_os_error()
, except
that it works in no_std
contexts. If this method returns None
, the
error value can still be formatted via the Diplay
implementation.
pub fn code(&self) -> Option<NonZeroU32>
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Retrieve the error code, if any.
If this Error
was constructed via From<NonZeroU32>
, then this method
will return this NonZeroU32
code (for no_std
this is always the
case). Otherwise, this method will return None
.
Trait Implementations
impl Debug for Error
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impl Display for Error
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impl Error for Error
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pub fn source(&self) -> Option<&(dyn Error + 'static)>
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pub fn backtrace(&self) -> Option<&Backtrace>
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pub fn description(&self) -> &str
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pub fn cause(&self) -> Option<&dyn Error>
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impl From<Error> for Error
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impl From<NonZeroU32> for Error
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pub fn from(code: NonZeroU32) -> Error
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Auto Trait Implementations
impl !RefUnwindSafe for Error
impl Send for Error
impl Sync for Error
impl Unpin for Error
impl !UnwindSafe for Error
Blanket Implementations
impl<S, D, Swp, Dwp, T> AdaptInto<D, Swp, Dwp, T> for S where
T: Component + Float,
D: AdaptFrom<S, Swp, Dwp, T>,
Swp: WhitePoint,
Dwp: WhitePoint,
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T: Component + Float,
D: AdaptFrom<S, Swp, Dwp, T>,
Swp: WhitePoint,
Dwp: WhitePoint,
pub fn adapt_into_using<M>(self, method: M) -> D where
M: TransformMatrix<Swp, Dwp, T>,
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M: TransformMatrix<Swp, Dwp, T>,
pub fn adapt_into(self) -> D
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T, U> ConvertInto<U> for T where
U: ConvertFrom<T>,
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U: ConvertFrom<T>,
pub fn convert_into(self) -> U
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pub fn convert_unclamped_into(self) -> U
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pub fn try_convert_into(self) -> Result<U, OutOfBounds<U>>
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impl<T> Downcast<T> for T
impl<T> From<T> for T
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impl<T> Instrument for T
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pub fn instrument(self, span: Span) -> Instrumented<Self>
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pub fn in_current_span(self) -> Instrumented<Self>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> Pointable for T
pub const ALIGN: usize
type Init = T
The type for initializers.
pub unsafe fn init(init: <T as Pointable>::Init) -> usize
pub unsafe fn deref<'a>(ptr: usize) -> &'a T
pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T
pub unsafe fn drop(ptr: usize)
impl<T> SetParameter for T
pub fn set<T>(&mut self, value: T) -> <T as Parameter<Self>>::Result where
T: Parameter<Self>,
T: Parameter<Self>,
impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Upcast<T> for T
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,