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dfe1c933b3
- 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++ 类模板优于函数模板
最近看到一个很有意思的模版问题，看看大家对函数模版与类模版的基础掌握的如何，对于下面这个例子会出现什么问题？
你一般使用什么方法进行修复？
template <typename T, int R>
struct foo {
foo(const T& v) : value_(v) {}
void bar() {
std::cout << "Generic" << std::endl;
for (int i = 0; i < R; ++i) std::cout << value_ << std::endl;
}
T value_;
};
template <>
void foo<float, 3>::bar() {
std::cout << "Float" << std::endl;
for (int i = 0; i < 3; ++i) std::cout << value_ << std::endl;
}
template <int R>
void foo<double, R>::bar() {
std::cout << "Double" << std::endl;
for (int i = 0; i < R; ++i) std::cout << value_ << std::endl;
}