result

A generic result type for returning either a result or an error. Deprecated. Use etl::expected

result

template <typename TValue, typename TError>
class result

template <typename TError>
class result<void, TError>

Description
Specialisation for void result.

result() = delete;

Description
Cannot be default constructed.

result(const result& other)

Description
Copy constructor.

result(result&& other)

Description
Move constructor.

result(const TValue& value)

Description
Construct from a value.
Not valid for void specialisation.

result(TValue&& value)

Description
Move construct from a value.
Not valid for void specialisation.

result(const TError& err)

Description
Construct from error.

result(TError&& err)

Description
Move construct from error.

result& operator =(const result& other)

Description
Copy assign.

result& operator =(result&& other)

Description
Move assign.

result& operator =(const TValue& value)

Description
Copy assign from value.
Not valid for void specialisation.

result& operator =(TValue&& value)

Description
Move assign from value.
Not valid for void specialisation.

result& operator =(const TError& err)

Description
Copy assign from error.

result& operator =(TError&& err)

Description
Move assign from error.

bool is_value() const

Description
true if result contains a value.

bool is_error() const

Description
true if result contains an error.

const TValue& value() const

Description
Returns a const reference to the value.
Undefined if the result does not contain an value.
Not valid for void specialisation.

TValue&& value()

Description
Returns an rvalue reference to the value.
Undefined if the result does not contain an value.
Not valid for void specialisation.

const TError& error() const

Description
Returns a const reference to the error.
Undefined if the result does not contain an error.

TError&& error()

Description
Returns an rvalue reference to the error.
Undefined if the result does not contain an error.