Struct devela::_libstd::alloc::AllocError

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pub struct AllocError;
🔬This is a nightly-only experimental API. (allocator_api)
Expand description

The AllocError error indicates an allocation failure that may be due to resource exhaustion or to something wrong when combining the given input arguments with this allocator.

Trait Implementations§

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impl Clone for AllocError

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fn clone(&self) -> AllocError

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for AllocError

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

Formats the value using the given formatter. Read more
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impl Display for AllocError

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

Formats the value using the given formatter. Read more
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impl Error for AllocError

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

Returns the lower-level source of this error, if any. Read more
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fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()
Read more
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fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
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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. Read more
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impl PartialEq for AllocError

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

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

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impl Eq for AllocError

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impl StructuralPartialEq for AllocError

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Also for T

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fn also_mut<F: FnOnce(&mut Self)>(self, f: F) -> Self

Applies a function which takes the parameter by exclusive reference, and then returns the (possibly) modified owned value. Read more
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fn also_ref<F: FnOnce(&Self)>(self, f: F) -> Self

Applies a function which takes the parameter by shared reference, and then returns the (possibly) modified owned value. Read more
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T, Res> Apply<Res> for T
where T: ?Sized,

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fn apply<F: FnOnce(Self) -> Res>(self, f: F) -> Res
where Self: Sized,

Apply a function which takes the parameter by value.
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fn apply_ref<F: FnOnce(&Self) -> Res>(&self, f: F) -> Res

Apply a function which takes the parameter by shared reference.
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fn apply_mut<F: FnOnce(&mut Self) -> Res>(&mut self, f: F) -> Res

Apply a function which takes the parameter by exclusive reference.
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> ByteSized for T

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const BYTE_ALIGN: usize = _

The alignment of this type in bytes.
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const BYTE_SIZE: usize = _

The size of this type in bytes.
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const PTR_BYTES: usize = 8usize

The size of a pointer in bytes, for the current platform.
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const PTR_BITS: usize = 64usize

The size of a pointer in bits, for the current platform.
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const LITTLE_ENDIAN: bool = true

True if the system’s architecture is little-endian.
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const BIG_ENDIAN: bool = false

True if the system’s architecture is big-endian.
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fn byte_align(&self) -> usize ⓘ

Returns the alignment of this type in bytes.
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fn byte_size(&self) -> usize ⓘ

Returns the size of this type in bytes. Read more
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fn ptr_size_ratio(&self) -> [usize; 2]

Returns the size ratio between PTR_BYTES and BYTE_SIZE. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> CloneToUninit for T
where T: Copy,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<T> ExtAny for T
where T: Any + ?Sized,

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fn type_of(&self) -> TypeId

Returns the TypeId of self. Read more
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fn type_name(&self) -> &'static str

Returns the type name of self. Read more
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fn type_is<T: 'static>(&self) -> bool

Returns true if Self is of type T. Read more
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fn as_any_ref(&self) -> &dyn Any
where Self: Sized,

Upcasts &self as &dyn Any. Read more
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fn as_any_mut(&mut self) -> &mut dyn Any
where Self: Sized,

Upcasts &mut self as &mut dyn Any. Read more
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fn as_any_box(self: Box<Self>) -> Box<dyn Any>
where Self: Sized,

Upcasts Box<self> as Box<dyn Any>. Read more
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fn downcast_ref<T: 'static>(&self) -> Option<&T>

Available on crate feature unsafe_dyn only.
Returns some shared reference to the inner value if it is of type T. Read more
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fn downcast_mut<T: 'static>(&mut self) -> Option<&mut T>

Available on crate feature unsafe_dyn only.
Returns some exclusive reference to the inner value if it is of type T. Read more
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impl<T> ExtMem for T
where T: ?Sized,

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const NEEDS_DROP: bool = _

Know whether dropping values of this type matters, in compile-time.
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fn mem_needs_drop(&self) -> bool

Returns true if dropping values of this type matters. Read more
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fn mem_drop(self)
where Self: Sized,

Drops self by running its destructor. Read more
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fn mem_forget(self)
where Self: Sized,

Forgets about self without running its destructor. Read more
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fn mem_replace(&mut self, other: Self) -> Self
where Self: Sized,

Replaces self with other, returning the previous value of self. Read more
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fn mem_take(&mut self) -> Self
where Self: Default,

Replaces self with its default value, returning the previous value of self. Read more
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fn mem_swap(&mut self, other: &mut Self)
where Self: Sized,

Swaps the value of self and other without deinitializing either one. Read more
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fn mem_as_bytes(&self) -> &[u8] ⓘ
where Self: Sync + Unpin,

Available on crate feature unsafe_slice only.
View a Sync + Unpin self as &[u8]. Read more
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fn mem_as_bytes_mut(&mut self) -> &mut [u8] ⓘ
where Self: Sync + Unpin,

Available on crate feature unsafe_slice only.
View a Sync + Unpin self as &mut [u8].
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.