[][src]Struct protobuf::SingularPtrField

pub struct SingularPtrField<T> { /* fields omitted */ }

Like Option<Box<T>>, but keeps the actual element on clear.


impl<T> SingularPtrField<T>[src]

pub fn some(value: T) -> SingularPtrField<T>[src]

Construct SingularPtrField from given object.

pub fn none() -> SingularPtrField<T>[src]

Construct an empty SingularPtrField.

pub fn from_option(option: Option<T>) -> SingularPtrField<T>[src]

Construct SingularPtrField from optional.

pub fn is_some(&self) -> bool[src]

True iff this object contains data.

pub fn is_none(&self) -> bool[src]

True iff this object contains no data.

pub fn into_option(self) -> Option<T>[src]

Convert into Option<T>.

pub fn as_ref<'a>(&'a self) -> Option<&'a T>[src]

View data as reference option.

pub fn as_mut<'a>(&'a mut self) -> Option<&'a mut T>[src]

View data as mutable reference option.

pub fn get_ref<'a>(&'a self) -> &'a T[src]

Get data as reference. Panics if empty.

pub fn get_mut_ref<'a>(&'a mut self) -> &'a mut T[src]

Get data as mutable reference. Panics if empty.

pub fn unwrap(self) -> T[src]

Take the data. Panics if empty

pub fn unwrap_or(self, def: T) -> T[src]

Take the data or return supplied default element if empty.

pub fn unwrap_or_else<F>(self, f: F) -> T where
    F: FnOnce() -> T, 

Take the data or return supplied default element if empty.

pub fn map<U, F>(self, f: F) -> SingularPtrField<U> where
    F: FnOnce(T) -> U, 

Apply given function to contained data to construct another SingularPtrField. Returns empty SingularPtrField if this object is empty.

pub fn iter<'a>(&'a self) -> IntoIter<&'a T>[src]

View data as iterator.

pub fn mut_iter<'a>(&'a mut self) -> IntoIter<&'a mut T>[src]

View data as mutable iterator.

pub fn take(&mut self) -> Option<T>[src]

Take data as option, leaving this object empty.

pub fn clear(&mut self)[src]

Clear this object, but do not call destructor of underlying data.

impl<T: Default + Clear> SingularPtrField<T>[src]

pub fn unwrap_or_default(self) -> T[src]

Get contained data, consume self. Return default value for type if this is empty.

pub fn set_default<'a>(&'a mut self) -> &'a mut T[src]

Initialize this object with default value. This operation can be more efficient then construction of clear element, because it may reuse previously contained object.

Trait Implementations

impl<T: Clone> Clone for SingularPtrField<T>[src]

impl<T: Debug> Debug for SingularPtrField<T>[src]

impl<T> Default for SingularPtrField<T>[src]

impl<T: Eq> Eq for SingularPtrField<T>[src]

impl<T> From<Option<T>> for SingularPtrField<T>[src]

impl<T: Hash> Hash for SingularPtrField<T>[src]

impl<'a, T> IntoIterator for &'a SingularPtrField<T>[src]

type Item = &'a T

The type of the elements being iterated over.

type IntoIter = IntoIter<&'a T>

Which kind of iterator are we turning this into?

impl<T: PartialEq> PartialEq<SingularPtrField<T>> for SingularPtrField<T>[src]

Auto Trait Implementations

impl<T> RefUnwindSafe for SingularPtrField<T> where
    T: RefUnwindSafe

impl<T> Send for SingularPtrField<T> where
    T: Send

impl<T> Sync for SingularPtrField<T> where
    T: Sync

impl<T> Unpin for SingularPtrField<T>

impl<T> UnwindSafe for SingularPtrField<T> where
    T: UnwindSafe

Blanket Implementations

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

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

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

impl<T> From<T> for T[src]

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

impl<T> ToOwned for T where
    T: Clone

type Owned = T

The resulting type after obtaining ownership.

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

type Error = Infallible

The type returned in the event of a conversion error.

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

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

The type returned in the event of a conversion error.