From Jason Turner

[optional.bad.access]

C++17 → C++20 1.0 KB 12 lines
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Archived: C++17 | C++20
Markdown: C++17 | C++20
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  ### Class `bad_optional_access` <a id="optional.bad.access">[[optional.bad.access]]</a>
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  ``` cpp
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  class bad_optional_access : public exception {
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  public:
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- bad_optional_access();
 
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  };
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  ```
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  The class `bad_optional_access` defines the type of objects thrown as
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  exceptions to report the situation where an attempt is made to access
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  the value of an optional object that does not contain a value.
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  ``` cpp
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- bad_optional_access();
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  ```
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- *Effects:* Constructs an object of class `bad_optional_access`.
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-
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- *Postconditions:* `what()` returns an *implementation-defined* NTBS.
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  ### Class `bad_optional_access` <a id="optional.bad.access">[[optional.bad.access]]</a>
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  ``` cpp
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  class bad_optional_access : public exception {
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  public:
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+ // see [exception] for the specification of the special member functions
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+ const char* what() const noexcept override;
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  };
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  ```
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  The class `bad_optional_access` defines the type of objects thrown as
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  exceptions to report the situation where an attempt is made to access
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  the value of an optional object that does not contain a value.
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  ``` cpp
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+ const char* what() const noexcept override;
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  ```
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+ *Returns:* An *implementation-defined* NTBS.
 
 
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