[−][src]Enum abi_stable::std_types::ROption
Ffi-safe equivalent of the Option<_>
type.
Option<_>
is also ffi-safe for NonNull/NonZero types,and references.
Use ROption<_> when Option<_>
would not be viable.
Variants
RSome(T)
RNone
Methods
impl<T> ROption<T>
[src]
pub fn as_ref(&self) -> ROption<&T>
[src]
pub fn as_mut(&mut self) -> ROption<&mut T>
[src]
pub fn as_option(&self) -> Option<&T>
[src]
pub fn as_option_mut(&mut self) -> Option<&mut T>
[src]
pub fn into_option(self) -> Option<T>
[src]
pub fn expect(self, msg: &str) -> T
[src]
pub fn unwrap(self) -> T
[src]
pub fn unwrap_or(self, def: T) -> T
[src]
pub fn unwrap_or_else<F>(self, f: F) -> T where
F: FnOnce() -> T,
[src]
F: FnOnce() -> T,
pub fn map<U, F>(self, f: F) -> ROption<U> where
F: FnOnce(T) -> U,
[src]
F: FnOnce(T) -> U,
pub fn map_or<U, F>(self, default: U, f: F) -> U where
F: FnOnce(T) -> U,
[src]
F: FnOnce(T) -> U,
pub fn map_or_else<U, D, F>(self, default: D, f: F) -> U where
D: FnOnce() -> U,
F: FnOnce(T) -> U,
[src]
D: FnOnce() -> U,
F: FnOnce(T) -> U,
pub fn filter<P>(self, predicate: P) -> Self where
P: FnOnce(&T) -> bool,
[src]
P: FnOnce(&T) -> bool,
pub fn or(self, optb: ROption<T>) -> ROption<T>
[src]
pub fn or_else<F>(self, f: F) -> ROption<T> where
F: FnOnce() -> ROption<T>,
[src]
F: FnOnce() -> ROption<T>,
pub fn xor(self, optb: ROption<T>) -> ROption<T>
[src]
pub fn get_or_insert(&mut self, v: T) -> &mut T
[src]
pub fn get_or_insert_with<F>(&mut self, f: F) -> &mut T where
F: FnOnce() -> T,
[src]
F: FnOnce() -> T,
pub fn take(&mut self) -> ROption<T>
[src]
pub fn replace(&mut self, value: T) -> ROption<T>
[src]
Trait Implementations
impl<T> IntoReprRust for ROption<T>
[src]
impl<T> SharedStableAbi for ROption<T> where
T: __StableAbi,
[src]
T: __StableAbi,
type IsNonZeroType = False
Whether this type has a single invalid bit-pattern. Read more
type Kind = __ValueKind
The kind of abi stability of this type,there are 2: Read more
type StaticEquivalent = ROption<__StaticEquivalent<T>>
A version of the type which does not borrow anything, used to create a UTypeId for doing layout checking. Read more
const S_LAYOUT: &'static TypeLayout
[src]
const S_ABI_INFO: &'static AbiInfoWrapper
[src]
The layout of the type,derived from Self::LAYOUT and associated types.
impl<T: Clone> Clone for ROption<T>
[src]
fn clone(&self) -> ROption<T>
[src]
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl<T: Ord> Ord for ROption<T>
[src]
fn cmp(&self, other: &ROption<T>) -> Ordering
[src]
fn max(self, other: Self) -> Self
1.21.0[src]
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.21.0[src]
Compares and returns the minimum of two values. Read more
fn clamp(self, min: Self, max: Self) -> Self
[src]
clamp
)Restrict a value to a certain interval. Read more
impl<T: Copy> Copy for ROption<T>
[src]
impl<T: Eq> Eq for ROption<T>
[src]
impl<T: PartialOrd> PartialOrd<ROption<T>> for ROption<T>
[src]
fn partial_cmp(&self, other: &ROption<T>) -> Option<Ordering>
[src]
fn lt(&self, other: &ROption<T>) -> bool
[src]
fn le(&self, other: &ROption<T>) -> bool
[src]
fn gt(&self, other: &ROption<T>) -> bool
[src]
fn ge(&self, other: &ROption<T>) -> bool
[src]
impl<T: PartialEq> PartialEq<ROption<T>> for ROption<T>
[src]
impl<T> From<Option<T>> for ROption<T>
[src]
impl<T> Into<Option<T>> for ROption<T>
[src]
impl<T: Debug> Debug for ROption<T>
[src]
impl<T: Hash> Hash for ROption<T>
[src]
fn hash<__HT: Hasher>(&self, state: &mut __HT)
[src]
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl<'de, T> Deserialize<'de> for ROption<T> where
T: Deserialize<'de>,
[src]
T: Deserialize<'de>,
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
D: Deserializer<'de>,
[src]
D: Deserializer<'de>,
impl<T> Serialize for ROption<T> where
T: Serialize,
[src]
T: Serialize,
Auto Trait Implementations
Blanket Implementations
impl<This> StableAbi for This where
This: SharedStableAbi<Kind = ValueKind>,
[src]
This: SharedStableAbi<Kind = ValueKind>,
const LAYOUT: &'static TypeLayout
[src]
const ABI_INFO: &'static AbiInfoWrapper
[src]
impl<T> MakeGetAbiInfo for T where
T: StableAbi,
[src]
T: StableAbi,
const CONST: GetAbiInfo
[src]
impl<T> MakeGetAbiInfo for T where
T: SharedStableAbi,
[src]
T: SharedStableAbi,
const CONST: GetAbiInfo
[src]
impl<T> MakeGetAbiInfo for T
[src]
const CONST: GetAbiInfo
[src]
impl<T> ToOwned for T where
T: Clone,
[src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
[src]
fn clone_into(&self, target: &mut T)
[src]
impl<T> From for T
[src]
impl<T, U> Into for T where
U: From<T>,
[src]
U: From<T>,
impl<T, U> TryFrom for T where
U: Into<T>,
[src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
[src]
impl<T> Borrow for T where
T: ?Sized,
[src]
T: ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
[src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
[src]
impl<T, U> TryInto for T where
U: TryFrom<T>,
[src]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
[src]
impl<T> Any for T where
T: 'static + ?Sized,
[src]
T: 'static + ?Sized,
impl<T> TypeIdentity for T where
T: ?Sized,
[src]
T: ?Sized,
type Type = T
The same type as Self. Read more
fn into_type_val(self) -> Self::Type where
Self::Type: Sized,
[src]
Self::Type: Sized,
Converts a value back to the original type.
fn into_type_ref(&self) -> &Self::Type
[src]
Converts a reference back to the original type.
fn into_type_mut(&mut self) -> &mut Self::Type
[src]
Converts a mutable reference back to the original type.
fn into_type_box(self: Box<Self>) -> Box<Self::Type>
[src]
Converts a box back to the original type.
fn into_type_arc(this: Arc<Self>) -> Arc<Self::Type>
[src]
Converts an Arc back to the original type.
fn into_type_rc(this: Rc<Self>) -> Rc<Self::Type>
[src]
Converts an Rc back to the original type.
fn from_type_val(this: Self::Type) -> Self where
Self::Type: Sized,
[src]
Self::Type: Sized,
Converts a value back to the original type.
fn from_type_ref(this: &Self::Type) -> &Self
[src]
Converts a reference back to the original type.
fn from_type_mut(this: &mut Self::Type) -> &mut Self
[src]
Converts a mutable reference back to the original type.
fn from_type_box(this: Box<Self::Type>) -> Box<Self>
[src]
Converts a box back to the original type.
fn from_type_arc(this: Arc<Self::Type>) -> Arc<Self>
[src]
Converts an Arc back to the original type.
fn from_type_rc(this: Rc<Self::Type>) -> Rc<Self>
[src]
Converts an Rc back to the original type.
impl<T> SelfOps for T where
T: ?Sized,
[src]
T: ?Sized,
const T: PhantomData<fn() -> Self>
[src]
Represents Self by using a VariantPhantom, using the syntax Type::T
to pass it in methods with _:VariantPhantom<T>
parameters. Read more
const T_D: PhantomData<Self>
[src]
Represents Self by using a VariantDropPhantom,for specialized cases. Read more
fn assert_ty(self, _other: PhantomData<fn() -> Self>) -> Self
[src]
Asserts that other
is the same type as self
.
fn assert_ty_ref(&self, _other: PhantomData<fn() -> Self>) -> &Self
[src]
Asserts that other
is the same type as self
.
fn assert_ty_mut(&mut self, _other: PhantomData<fn() -> Self>) -> &mut Self
[src]
Asserts that other
is the same type as self
.
fn ty_(&self) -> PhantomData<fn() -> Self>
[src]
Equivalent to SelfOps::T,as a method. Read more
fn ty_d(&self) -> PhantomData<Self>
[src]
Equivalent to [Self::ty_],for specialized cases. Read more
fn ty_inv(&self) -> PhantomData<fn(Self) -> Self>
[src]
Equivalent to [Self::ty_] with an invariant type.
fn ty_inv_ref(&self) -> PhantomData<Cell<&Self>>
[src]
Equivalent to [Self::ty_] with an invariant lifetime.
fn eq_id(&self, other: &Self) -> bool
[src]
Identity comparison to another value of the same type. Read more
fn piped<F, U>(self, f: F) -> U where
F: FnOnce(Self) -> U,
[src]
F: FnOnce(Self) -> U,
Emulates the pipeline operator,allowing method syntax in more places. Read more
fn piped_ref<'a, F, U>(&'a self, f: F) -> U where
F: FnOnce(&'a Self) -> U,
[src]
F: FnOnce(&'a Self) -> U,
The same as piped
except that the function takes &Self
Useful for functions that take &Self
instead of Self
. Read more
fn piped_mut<'a, F, U>(&'a mut self, f: F) -> U where
F: FnOnce(&'a mut Self) -> U,
[src]
F: FnOnce(&'a mut Self) -> U,
The same as piped
except that the function takes &mut Self
. Useful for functions that take &mut Self
instead of Self
. Read more
fn mutated<F>(self, f: F) -> Self where
F: FnOnce(&mut Self),
[src]
F: FnOnce(&mut Self),
Mutates self using a closure taking self by mutable reference, passing it along the method chain. Read more
fn observe<F>(self, f: F) -> Self where
F: FnOnce(&Self),
[src]
F: FnOnce(&Self),
Observes the value of self passing it along unmodified. Useful in a long method chain. Read more
fn into_<T>(self, PhantomData<fn() -> T>) -> T where
Self: Into<T>,
[src]
Self: Into<T>,
Performs a conversion using Into. Read more
fn as_ref_<T>(&self) -> &T where
Self: AsRef<T>,
T: ?Sized,
[src]
Self: AsRef<T>,
T: ?Sized,
Performs a reference to reference conversion using AsRef, using the turbofish .as_ref_::<_>()
syntax. Read more
fn as_mut_<T>(&mut self) -> &mut T where
Self: AsMut<T>,
T: ?Sized,
[src]
Self: AsMut<T>,
T: ?Sized,
Performs a mutable reference to mutable reference conversion using AsMut, using the turbofish .as_mut_::<_>()
syntax. Read more
fn drop_(self)
[src]
Drops self
using method notation. Alternative to std::mem::drop
. Read more
impl<T, U> TryInto for T where
U: TryFrom<T>,
[src]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The error type returned when the conversion fails.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
[src]
impl<T> DeserializeOwned for T where
T: Deserialize<'de>,
[src]
T: Deserialize<'de>,