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- const README: rewrite the space-saving claim per issue #5 follow-ups (constant-expression const vs #define immediates; which const qualify as constant expressions) - const README: fix the class-section diagnosis per issue #338 (overload resolution picks the const overload; the restriction only surfaces once that overload is removed) - sizeof README: virtual-inheritance result is compiler-dependent (GCC merges vbptr+vfptr -> 16, MSVC keeps them separate -> 32) #246 - static README: new section on internal linkage / access restriction with anonymous-namespace comparison #142 - 10-day practice: full problem list table + fixed day links #136 - new design_pattern/singleton/singleton_default.hpp: reusable thread-safe CRTP singleton template, compile+concurrency tested #303
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C++ 命名空间
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- 全局作用域符（::name）：用于类型名称（类、类成员、成员函数、变量等）前，表示作用域为全局命名空间
- 类作用域符（class::name）：用于表示指定类型的作用域范围是具体某个类的
- 命名空间作用域符（namespace::name）:用于表示指定类型的作用域范围是具体某个命名空间的
具体代码见：maohao.cpp