Public Types | |
| typedef optional< T & > | _self_type |
| Type for the optional class itself. More... | |
Public Member Functions | |
| constexpr | optional (std::nullptr_t) |
| Create a disengaged object. More... | |
| constexpr | optional () |
| Default constructor. More... | |
| optional (T &other) | |
Create an engaged object by moving other content. More... | |
| optional (_self_type const &other)=default | |
| Copy constructor. More... | |
| _self_type & | operator= (_self_type const &other)=default |
| Assign new content to the object. More... | |
| void | disengage () |
| Disengage the object, destroying the current contained value, if any. | |
| operator bool () const | |
Convert to bool based on whether the object is engaged or not. More... | |
| bool | operator! () const |
Convert to bool based on whether the object is engaged or not. More... | |
| T * | operator-> () |
| Access member of the contained value. More... | |
| T const * | operator-> () const |
| Access constant member of the contained value. More... | |
| T & | operator* () |
| Get the contained value. More... | |
| T const & | operator* () const |
| Get the contained value. More... | |
| T & | get () |
| Get the contained value. More... | |
| T const & | get () const |
| Get the contained value. More... | |
| void | swap (optional< T > &other) |
Swap content with another eina::optional object. More... | |
| bool | is_engaged () const |
| Check if the object is engaged. More... | |
| typedef optional<T&> efl::eina::optional< T & >::_self_type |
Type for the optional class itself.
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inline |
Create a disengaged object.
This constructor creates a disengaged eina::optional object.
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inline |
Default constructor.
Create a disengaged object.
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inline |
Create an engaged object by moving other content.
| other | R-value reference to the desired type. |
This constructor creates an eina::optional object in an engaged state. The contained value is initialized by moving other.
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default |
Copy constructor.
Create an object containing the same value as other and in the same state.
| other | Constant reference to another eina::optional object that holds the same value type. |
This constructor creates an eina::optional object with the same engagement state of other. If other is engaged then the contained value of the newly created object is initialized by copying the contained value of other.
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default |
Assign new content to the object.
| other | Constant reference to another eina::optional object that holds the same value type. |
This operator replaces the current content of the object. If other is engaged its contained value is copied to this object, making *this be considered engaged too. If other is disengaged *this is also made disengaged and its contained value, if any, is simple destroyed.
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inlineexplicit |
Convert to bool based on whether the object is engaged or not.
true if the object is engaged, false otherwise.
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inline |
Convert to bool based on whether the object is engaged or not.
true if the object is disengaged, false otherwise.
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inline |
Access member of the contained value.
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inline |
Access constant member of the contained value.
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inline |
Get the contained value.
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inline |
Get the contained value.
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inline |
Get the contained value.
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inline |
Get the contained value.
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inline |
Swap content with another eina::optional object.
| other | Another eina::optional object. |
References efl::eina::swap().
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inline |
Check if the object is engaged.
true if the object is currently engaged, false otherwise.