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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++ explicit 显式转换
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- explicit 修饰构造函数时，可以防止隐式转换和复制初始化
- explicit 修饰转换函数时，可以防止隐式转换，但按语境转换除外
代码参见:.explicit.cpp
参考链接：
https://stackoverflow.com/questions/4600295/what-is-the-meaning-of-operator-bool-const