C++ 概念： CopyConstructible

 

C++

语言

概念

实用工具库

字符串库

集装箱库

算法库

迭代器库

Numerics库

输入/输出库

本地化库

正则表达式库 （C++11）

原子操作库 （C++11）

线程的支持库 （C++11）

 

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
容器
Container SequenceContainer ReversibleContainer	AssociativeContainer AllocatorAwareContainer UnorderedAssociativeContainer （C++11）
容器元素
CopyInsertable （C++11） MoveInsertable （C++11）	EmplaceConstructible （C++11）
迭代器
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）

 

指定的类型的一个实例可以复制构造（复制）.

Original:

Specifies that an instance of the type can be copy-constructed (copied).

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这个概念意味着MoveConstructible.

Original:

This concept implies MoveConstructible.

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要求

该类型必须实现以下功能：1

Original:

The type must implement the following functions:

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Type::Type

Type::Type( Type& other ); Type::Type( const Type& other ); Type::Type( volatile Type& other ); Type::Type( const volatile Type& other );		（的变种之一就足够了）

拷贝构造函数: constructs an instance of a type with the contents of other. The internal state of other is not modified.

The following expressions must have the specified effects:

表达 Original: Expression The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Effects
Type a = v;	a是相当于v，rvType是一个实例。 v必须保持不变. Original: a is equivalent to v, where rv is an instance of Type. v must be unchanged. The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Type(v);	Type是一个实例vv，相当于一个临时对象类型Type。 v必须保持不变. Original: a temporary object of type Type is equivalent to v, where v is an instance of Type. v must be unchanged. The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

另请参阅

is_copy_constructible is_trivially_copy_constructible is_nothrow_copy_constructible （C++11） （C++11） （C++11）	一类的检查，如果有拷贝构造函数 Original: checks if a type has a copy constructor 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）