std::variant

URI: https://gptkb.org/entity/std::variant

GPTKB entity

Statements (50)

Predicate	Object
gptkbp:instanceOf	C++ standard library class template
gptkbp:accessibleBy	std::get std::get_if std::visit
gptkbp:alternativeCount	std::variant_size
gptkbp:alternativeIndexType	std::size_t
gptkbp:alternativeType	std::variant_alternative
gptkbp:canBeEmpty	true
gptkbp:canBeValuelessByException	true
gptkbp:cannotHoldAbstractTypes	true
gptkbp:cannotHoldArrays	true
gptkbp:cannotHoldReferences	true
gptkbp:cannotHoldVoid	true
gptkbp:defaultConstructsTo	first alternative
gptkbp:definedIn	<variant> header
gptkbp:hasNoDefaultAlternative	true
https://www.w3.org/2000/01/rdf-schema#label	std::variant
gptkbp:introducedIn	gptkb:C++17
gptkbp:isAssignableIfAllAlternativesAreAssignable	true
gptkbp:isComparableIfAllAlternativesAreComparable	true
gptkbp:isConstructibleIfAnyAlternativeIsConstructible	true
gptkbp:isCopyAssignableIfAllAlternativesAreCopyAssignable	true
gptkbp:isCopyConstructibleIfAllAlternativesAreCopyConstructible	true
gptkbp:isDestructibleIfAllAlternativesAreDestructible	true
gptkbp:isMoveAssignableIfAllAlternativesAreMoveAssignable	true
gptkbp:isMoveConstructibleIfAllAlternativesAreMoveConstructible	true
gptkbp:isNothrowCopyAssignableIfAllAlternativesAreNothrowCopyAssignable	true
gptkbp:isNothrowCopyConstructibleIfAllAlternativesAreNothrowCopyConstructible	true
gptkbp:isNothrowDestructibleIfAllAlternativesAreNothrowDestructible	true
gptkbp:isNothrowMoveAssignableIfAllAlternativesAreNothrowMoveAssignable	true
gptkbp:isNothrowMoveConstructibleIfAllAlternativesAreNothrowMoveConstructible	true
gptkbp:isNothrowSwappableIfAllAlternativesAreNothrowSwappable	true
gptkbp:isSwappableIfAllAlternativesAreSwappable	true
gptkbp:isTriviallyCopyableIfAllAlternativesAre	true
gptkbp:isTriviallyCopyAssignableIfAllAlternativesAre	true
gptkbp:isTriviallyDestructibleIfAllAlternativesAre	true
gptkbp:isTriviallyMoveAssignableIfAllAlternativesAre	true
gptkbp:isTriviallyMoveConstructibleIfAllAlternativesAre	true
gptkbp:isTypeSafe	true
gptkbp:namespace	std
gptkbp:purpose	type-safe union
gptkbp:supports	comparison movement assignment copy multiple alternative types
gptkbp:throwsOnInvalidAccess	std::bad_variant_access
gptkbp:bfsParent	gptkb:C++17 gptkb:Boost.Variant
gptkbp:bfsLayer	6