Enum devela::code::NeverOk

source ·

pub enum NeverOk {}

Expand description

The type intended for a Result::Ok variant that can never happen.

Trait Implementations§

source §

impl Clone for NeverOk

source §

fn clone(&self) -> NeverOk

Returns a copy of the value. Read more

1.0.0 · source§

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

Performs copy-assignment from source. Read more

source §

impl Debug for NeverOk

source §

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

Formats the value using the given formatter. Read more

source §

impl Display for NeverOk

source §

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

Formats the value using the given formatter. Read more

source §

impl Hash for NeverOk

source §

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

Feeds this value into the given Hasher. Read more

1.3.0 · source§

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

Feeds a slice of this type into the given Hasher. Read more

source §

impl Ord for NeverOk

source §

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

This method returns an Ordering between self and other. Read more

1.21.0 · source§

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

Compares and returns the maximum of two values. Read more

1.21.0 · source§

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

Compares and returns the minimum of two values. Read more

1.50.0 · source§

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more

source §

impl PartialEq for NeverOk

source §

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

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

1.0.0 · source§

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

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

source §

impl PartialOrd for NeverOk

source §

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

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

1.0.0 · source§

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

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

1.0.0 · source§

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

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

1.0.0 · source§

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

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

1.0.0 · source§

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

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

source §

impl Copy for NeverOk

source §

impl Eq for NeverOk

source §

impl StructuralPartialEq for NeverOk

Auto Trait Implementations§

§

impl UnwindSafe for NeverOk

Blanket Implementations§

source §

impl<T> Also for T

source §

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

source §

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

source §

impl<T> Any for T
where T: 'static + ?Sized,

source §

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source §

impl<T, Res> Apply<Res> for T
where T: ?Sized,

source §

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

Apply a function which takes the parameter by value.

source §

fn apply_ref<F: FnOnce(&Self) -> Res>(&self, f: F) -> Res

Apply a function which takes the parameter by shared reference.

source §

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

Apply a function which takes the parameter by exclusive reference.

source §

impl<T> Borrow<T> for T
where T: ?Sized,

source §

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source §

impl<T> BorrowMut<T> for T
where T: ?Sized,

source §

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

Mutably borrows from an owned value. Read more

source §

impl<T> ByteSized for T

source §

const BYTE_ALIGN: usize = _

The alignment of this type in bytes.

source §

const BYTE_SIZE: usize = _

The size of this type in bytes.

source §

const PTR_BYTES: usize = 4usize

The size of a pointer in bytes, for the current platform.

source §

const PTR_BITS: usize = 32usize

The size of a pointer in bits, for the current platform.

source §

const LITTLE_ENDIAN: bool = true

True if the system’s architecture is little-endian.

source §

const BIG_ENDIAN: bool = false

True if the system’s architecture is big-endian.

source §

fn byte_align(&self) -> usize ⓘ

Returns the alignment of this type in bytes.

source §

fn byte_size(&self) -> usize ⓘ

Returns the size of this type in bytes. Read more

source §

fn ptr_size_ratio(&self) -> [usize; 2]

Returns the size ratio between PTR_BYTES and BYTE_SIZE. Read more

source §

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

source §

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

source §

impl<T> CloneToUninit for T
where T: Copy,

source §

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

source §

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

source §

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

Checks if this value is equivalent to the given key. Read more

source §

impl<T> ExtAny for T
where T: Any + ?Sized,

source §

fn type_of(&self) -> TypeId

Returns the TypeId of self. Read more

source §

fn type_name(&self) -> &'static str

Returns the type name of self. Read more

source §

fn type_is<T: 'static>(&self) -> bool

Returns true if Self is of type T. Read more

source §

fn as_any_ref(&self) -> &dyn Any
where Self: Sized,

Upcasts &self as &dyn Any. Read more

source §

fn as_any_mut(&mut self) -> &mut dyn Any
where Self: Sized,

Upcasts &mut self as &mut dyn Any. Read more

source §

fn as_any_box(self: Box<Self>) -> Box<dyn Any>
where Self: Sized,

Upcasts Box<self> as Box<dyn Any>. Read more

source §

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

source §

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

source §

impl<T> ExtMem for T
where T: ?Sized,

source §

const NEEDS_DROP: bool = _

Know whether dropping values of this type matters, in compile-time.

source §

fn mem_needs_drop(&self) -> bool

Returns true if dropping values of this type matters. Read more

source §

fn mem_drop(self)
where Self: Sized,

Drops self by running its destructor. Read more

source §

fn mem_forget(self)
where Self: Sized,

Forgets about self without running its destructor. Read more

source §

fn mem_replace(&mut self, other: Self) -> Self
where Self: Sized,

Replaces self with other, returning the previous value of self. Read more

source §

fn mem_take(&mut self) -> Self
where Self: Default,

Replaces self with its default value, returning the previous value of self. Read more

source §

fn mem_swap(&mut self, other: &mut Self)
where Self: Sized,

Swaps the value of self and other without deinitializing either one. Read more

source §

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

source §

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].

source §

impl<T> From<T> for T

source §

fn from(t: T) -> T

Returns the argument unchanged.

source §

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

source §

fn into(self) -> U

Calls U::from(self).

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

source §

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

§

type Owned = T

The resulting type after obtaining ownership.

source §

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

source §

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

source §

impl<T> ToString for T
where T: Display + ?Sized,

source §

default fn to_string(&self) -> String

Converts the given value to a String. Read more

source §

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

§

type Error = Infallible

The type returned in the event of a conversion error.

source §

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

source §

impl<T, U> TryInto for T
where U: TryFrom<T>,

§

type Error = >::Error

The type returned in the event of a conversion error.

source §

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Enum devela::code::NeverOkCopy item path

Trait Implementations§

impl Clone for NeverOk

fn clone(&self) -> NeverOk

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

impl Debug for NeverOk

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

impl Display for NeverOk

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

impl Hash for NeverOk

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

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

impl Ord for NeverOk

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

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

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

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd,

impl PartialEq for NeverOk

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

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

impl PartialOrd for NeverOk

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

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

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

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

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

impl Copy for NeverOk

impl Eq for NeverOk

impl StructuralPartialEq for NeverOk

Auto Trait Implementations§

impl Freeze for NeverOk

impl RefUnwindSafe for NeverOk

impl Send for NeverOk

impl Sync for NeverOk

impl Unpin for NeverOk

impl UnwindSafe for NeverOk

Blanket Implementations§

impl<T> Also for T

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

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

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T, Res> Apply<Res> for Twhere T: ?Sized,

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

fn apply_ref<F: FnOnce(&Self) -> Res>(&self, f: F) -> Res

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

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

impl<T> ByteSized for T

const BYTE_ALIGN: usize = _

const BYTE_SIZE: usize = _

const PTR_BYTES: usize = 4usize

const PTR_BITS: usize = 32usize

const LITTLE_ENDIAN: bool = true

const BIG_ENDIAN: bool = false

fn byte_align(&self) -> usize ⓘ

fn byte_size(&self) -> usize ⓘ

fn ptr_size_ratio(&self) -> [usize; 2]

impl<T> CloneToUninit for Twhere T: Clone,

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

impl<T> CloneToUninit for Twhere T: Copy,

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

impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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

impl<T> ExtAny for Twhere T: Any + ?Sized,

fn type_of(&self) -> TypeId

fn type_name(&self) -> &'static str

fn type_is<T: 'static>(&self) -> bool

fn as_any_ref(&self) -> &dyn Anywhere Self: Sized,

fn as_any_mut(&mut self) -> &mut dyn Anywhere Self: Sized,

fn as_any_box(self: Box<Self>) -> Box<dyn Any>where Self: Sized,

fn downcast_ref<T: 'static>(&self) -> Option<&T>

fn downcast_mut<T: 'static>(&mut self) -> Option<&mut T>

impl<T> ExtMem for Twhere T: ?Sized,

const NEEDS_DROP: bool = _

fn mem_needs_drop(&self) -> bool

fn mem_drop(self)where Self: Sized,

fn mem_forget(self)where Self: Sized,

Enum devela::code::NeverOk

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

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

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

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

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

impl<T> Any for T
where T: 'static + ?Sized,

impl<T, Res> Apply<Res> for T
where T: ?Sized,

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

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

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

impl<T> CloneToUninit for T
where T: Copy,

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

impl<T> ExtAny for T
where T: Any + ?Sized,

fn as_any_ref(&self) -> &dyn Any
where Self: Sized,

fn as_any_mut(&mut self) -> &mut dyn Any
where Self: Sized,

fn as_any_box(self: Box<Self>) -> Box<dyn Any>
where Self: Sized,

impl<T> ExtMem for T
where T: ?Sized,

fn mem_drop(self)
where Self: Sized,

fn mem_forget(self)
where Self: Sized,

fn mem_replace(&mut self, other: Self) -> Self
where Self: Sized,

fn mem_take(&mut self) -> Self
where Self: Default,

fn mem_swap(&mut self, other: &mut Self)
where Self: Sized,

fn mem_as_bytes(&self) -> &[u8] ⓘ
where Self: Sync + Unpin,

fn mem_as_bytes_mut(&mut self) -> &mut [u8] ⓘ
where Self: Sync + Unpin,

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

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

impl<T> ToString for T
where T: Display + ?Sized,

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

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,