class optional

template <typename T>

class optional

Defined at line 27 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

optional holds an 'optional' contained value.

This is similar to C++17's std::optional.

Public Methods

void optional<T> ()

constructors

Defined at line 36 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

void optional<T> (const optional<T> & other)

Defined at line 82 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

void optional<T> (optional<T> && other)

Defined at line 85 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

template <typename U>
void optional<T> (const optional<U> & other)

Defined at line 89 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

template <typename U>
void optional<T> (optional<U> && other)

Defined at line 97 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

template <typename U = value_type, typename = IsConvertibleToT<U>>
void optional<T> (U && value)

Defined at line 105 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

T & value ()

value() returns the contained value.

If the optional does not contain a value, then value() will assert.

Defined at line 109 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

const T & value ()

Defined at line 115 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

const T & value (const T & defaultValue)

value() returns the contained value, or defaultValue if the optional does

not contain a value.

Defined at line 121 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

bool operator bool ()

operator bool() returns true if the optional contains a value.

Defined at line 129 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

bool has_value ()

has_value() returns true if the optional contains a value.

Defined at line 134 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

optional<T> & operator= (const optional<T> & other)

assignment

Defined at line 139 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

optional<T> & operator= (optional<T> && other)

Defined at line 146 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

template <typename U = T, typename = IsConvertibleToT<U>>
optional<T> & operator= (U && value)

Defined at line 153 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

template <typename U>
optional<T> & operator= (const optional<U> & other)

Defined at line 161 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

template <typename U>
optional<T> & operator= (optional<U> && other)

Defined at line 169 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

const T * operator-> ()

value access

Defined at line 177 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

T * operator-> ()

Defined at line 183 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

const T & operator* ()

Defined at line 189 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h

T & operator* ()

Defined at line 195 of file ../../third_party/github.com/google/cppdap/src/include/dap/optional.h