C++ 概念： PODType

 

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C++ 的概念

基础
DefaultConstructible CopyAssignable CopyConstructible	MoveAssignable （C++11） MoveConstructible （C++11） Destructible
库
EqualityComparable LessThanComparable Swappable （C++11） ValueSwappable （C++11）	NullablePointer （C++11） Hash （C++11） Allocator
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Container SequenceContainer ReversibleContainer	AssociativeContainer AllocatorAwareContainer UnorderedAssociativeContainer （C++11）
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CopyInsertable （C++11） MoveInsertable （C++11）	EmplaceConstructible （C++11）
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Iterator OutputIterator InputIterator	ForwardIterator BidirectionalIterator RandomAccessIterator
随机数
SeedSequence （C++11） RandomNumberEngine （C++11）	RandomNumberDistribution （C++11） UniformRandomNumberGenerator （C++11） RandomNumberEngineAdaptor （C++11）
并发
BasicLockable （C++11） Lockable （C++11） TimedLockable （C++11）	Mutex （C++11） TimedMutex （C++11）
其它
CharTraits pos_type off_type Clock （C++11）	UnaryTypeTrait （C++11） BinaryTypeTrait （C++11） TransformationTrait （C++11） TrivialClock （C++11）

 

指定的类型是POD（普通旧数据）的类型。这意味着该类型是在C编程语言中使用的类型兼容，使用C库函数可以被操纵：它可以创建std::malloc，它可以被复制与std::memmove等，并可以交换C库直接，其二进制形式.

Original:

Specifies that the type is POD (Plain Old Data) type. This means the type is compatible with the types used in the C programming language, can be manipulated using C library functions: it can be created with std::malloc, it can be copied with std::memmove, etc, and can be exchanged with C libraries directly, in its binary form.

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注意，该标准没有定义或概念，这个名字的命名要求。这是一种由核心语言定义的类别。作为唯一的一致性的概念，它包括在这里.

Original:

Note, that the standard doesn't define a named requirement or concept with this name. This is a type category defined by the core language. It is included here as concept only for consistency.

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需求NJ

无论是

Original:

Either

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• ScalarType

或者一个类类型（class或struct或union）

Original:

Or a class type (class or struct or union) that is

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• an AggregateType
• 有没有非静态成员，非POD

  Original:

  has no non-static members that are non-POD

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• 没有任何成员的引用类型

  Original:

  has no members of reference type

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• 有没有用户自定义拷贝构造函数

  Original:

  has no user-defined copy constructor

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• 有没有用户定义的析构函数

  Original:

  has no user-defined destructor

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或这种类型的数组

Original:

Or an array of such type

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需求NJ

无论是

Original:

Either

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• ScalarType

或者一个类类型（class或struct或union）

Original:

Or a class type (class or struct or union) that is

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• TrivialType
• StandardLayoutType
• 有没有非静态成员，非POD

  Original:

  has no non-static members that are non-POD

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或这种类型的数组

Original:

Or an array of such type

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另请参阅

is_pod （C++11）	检查如果一个类型是普通的旧数据（POD）类型 Original: checks if a type is plain-old data (POD) type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （类模板）