Namespaces
Variants

C++ identifier with special meaning: module (since C++20)

From cppreference.net
C++ language
General topics
Flow control
Conditional execution statements
Iteration statements (loops)
Jump statements
Functions
Function declaration
Lambda function expression
inline specifier
Dynamic exception specifications ( until C++17* )
noexcept specifier (C++11)
Exceptions
Namespaces
Types
Specifiers
constexpr (C++11)
consteval (C++20)
constinit (C++20)
Storage duration specifiers
Initialization
Expressions
Alternative representations
Literals
Boolean - Integer - Floating-point
Character - String - nullptr (C++11)
User-defined (C++11)
Utilities
Attributes (C++11)
Types
typedef declaration
Type alias declaration (C++11)
Casts
Memory allocation
Classes
Class-specific function properties
Special member functions
Templates
Miscellaneous

目录

用法

注释

功能测试宏 标准 功能特性
__cpp_modules 201907L (C++20) 模块 — 核心语言支持

示例

module;            // 开始全局模块片段
#include <string>
export module foo; // 结束全局模块片段
                   // 声明命名模块 'foo' 的主模块接口单元
                   // 开始模块单元作用域
export std::string f();
module : private;  // 结束模块接口单元中可影响其他翻译单元行为的部分
                   // 开始私有模块片段
std::string f()
{
    return "foo";
}

参见