lely::util::Result< T, typename ::std::enable_if<!::std::is_void< T >::value >::type > Class Template Reference

Public Types
using	value_type
	The value type on success.
using	error_type
	The error type on failure.

Public Member Functions
	Result ()=default
	Constructs a successful result with an empty value.
	Result (const detail::Success< void > &)
	Constructs a successful result with an empty value.
	Result (const detail::Success< U > &s)
	Constructs a successful result with the specified value.
	Result (detail::Success< U > &&s)
	Constructs a successful result with the specified value.
	Result (const detail::Failure< U > &f)
	Constructs a failure result with the specified error.
	Result (detail::Failure< U > &&f)
	Constructs a failure result with the specified error.
	Result (U &&u, typename ::std::enable_if< ::std::is_constructible< value_type, U >::value &&!::std::is_constructible< error_type, U >::value, bool >::type=false)
	Constructs a successful result with value u if U is constructible to #value_type and not constructible to #error_type.
	Result (U &&u, typename ::std::enable_if< !::std::is_constructible< value_type, U >::value &&::std::is_constructible< error_type, U >::value, bool >::type=false)
	Constructs a failure result with error u if U is constructible to #error_type and not constructible to #value_type.
	operator bool () const noexcept
	Check whether *this contains a value (and not a non-zero error).
bool	has_value () const noexcept
	Returns true if *this contains a value (and not a non-zero error).
value_type &	value ()
	Returns a reference to the value if *this contains a value, and throws an exception if *this contains a non-zero error.
const value_type &	value () const
	Returns a reference to the value if *this contains a value, and throws an exception if *this contains a non-zero error.
bool	has_error () const noexcept
	Returns true if *this contains a non-zero error.
error_type &	error () noexcept
	Returns a reference to the error, if any.
const error_type &	error () const noexcept
	Returns a reference to the error, if any.

Detailed Description

template<class T>
class lely::util::Result< T, typename ::std::enable_if<!::std::is_void< T >::value >::type >

Definition at line 313 of file result.hpp.

Constructor & Destructor Documentation

Result() [1/5]

lely::util::Result< T, typename ::std::enable_if<!::std::is_void< T >::value >::type >::Result ( const detail::Success< void > & )

inline

Constructs a successful result with an empty value.

See also

success()

Definition at line 214 of file result.hpp.

Result() [2/5]

lely::util::Result< T, typename ::std::enable_if<!::std::is_void< T >::value >::type >::Result ( const detail::Success< U > & s )

inline

Constructs a successful result with the specified value.

See also

success(T&&)

Definition at line 218 of file result.hpp.

Result() [3/5]

lely::util::Result< T, typename ::std::enable_if<!::std::is_void< T >::value >::type >::Result ( detail::Success< U > && s )

inline

Constructs a successful result with the specified value.

See also

success(T&&)

Definition at line 222 of file result.hpp.

Result() [4/5]

lely::util::Result< T, typename ::std::enable_if<!::std::is_void< T >::value >::type >::Result ( const detail::Failure< U > & f )

inline

Constructs a failure result with the specified error.

See also

failure(E&&)

Definition at line 226 of file result.hpp.

Result() [5/5]

lely::util::Result< T, typename ::std::enable_if<!::std::is_void< T >::value >::type >::Result ( detail::Failure< U > && f )

inline

Constructs a failure result with the specified error.

See also

failure(E&&)

Definition at line 230 of file result.hpp.

Member Function Documentation

has_value()

bool lely::util::Result< T, typename ::std::enable_if<!::std::is_void< T >::value >::type >::has_value ( ) const

inlinenoexcept

Returns true if *this contains a value (and not a non-zero error).

See also

has_error()

Definition at line 265 of file result.hpp.

has_error()

bool lely::util::Result< T, typename ::std::enable_if<!::std::is_void< T >::value >::type >::has_error ( ) const

inlinenoexcept

Returns true if *this contains a non-zero error.

See also

has_value()

Definition at line 291 of file result.hpp.

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The documentation for this class was generated from the following file:

• include/lely/util/result.hpp