测试类型是否是标记为 aggregate 的类类型。语法C++ 复制 template <class T> struct is_aggregate; 参数T 要查询的类型。备注如果类型 T 是标记为 aggregate 的类类型,则类型谓词的实例保持 true;否则保持 false。 如果 T 是类类型,则它必须是完整类型。
args) { if constexpr(std::is_aggregate_v<T>) { return ::new (static_cast<void*>(p)) T{std::forward<Args>(args)...}; } else { return ::new (static_cast<void*>(p)) T(std::forward<Args>(args)...); } } struct A { int x, y; }; struct B { B(int, const char*)...
std::is_aggregate std::has_unique_object_representations std::endian std::remove_cvref std::type_index C 数值极限接口 定宽整数类型 (C++11 起) std::is_bounded_array std::is_unbounded_array std::size_t std::nullptr_t std::is_integral std::rank std::is_void std::is_null_pointer std...
std::is_aggregate 定义于头文件<type_traits> template<classT> structis_aggregate; (C++17 起) 检查T是否为聚合类型。若T为聚合类型,则成员常量value等于true,否则为false。 若std::remove_all_extents_t<T>是异于(可以有 cv 限定的)void的不完整类型,则行为未定义。
[英]Returns whether this privilege is an aggregate privilege. [中]返回此权限是否为聚合权限。 代码示例 代码示例来源:origin: apache/jackrabbit publicbooleanisAggregate(){ returnprivilege.isAggregate(); } 代码示例来源:origin: apache/jackrabbit
在下文中一共展示了CompilerType::IsAggregateType方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。 示例1: if ▲点赞 7▼ //...这里部分代码省略...value.GetScalar() = (int16_t)(reg_ctx->ReadRegisterAsUnsigned...
IsAggregate 属性 参考 反馈 定义 命名空间: Microsoft.EntityFrameworkCore.Metadata 程序集: Microsoft.EntityFrameworkCore.Relational.dll 包: Microsoft.EntityFrameworkCore.Relational v8.0.0 获取指示此函数是否为聚合函数的值。 C# 复制 public bool IsAggregate { get; } 属性值 Boolean 适用于 产...
1. In general, an aggregate is data composed of smaller pieces that form a larger whole.2. An aggregator is a program designed to collect data from multiple sources. For example, a user could use an RSS aggregator that collects their favorite web pages RSS feeds and instantly see all updat...
IsAggregateRow 属性 参考 反馈 定义 命名空间: Microsoft.ReportingServices.DataProcessing 程序集: Microsoft.ReportingServices.Interfaces.dll, Microsoft.ReportingServices.SharePoint.UI.WebParts.dll 指示当前行是否包含聚合数据。 C# 复制 public bool IsAggregateRow { get; } 属性值 Boolean ...
What is the definition of aggregate demand?Aggregate demand is equal to a nation’sgross domestic product(GDP) in the long-term. However, in the short-term, AD measures the total spending of the economy on domestic goods and services for a given period and at a givenprice level. Generally...