zhangxing
24 lines
795 B
C++
24 lines
795 B
C++
//
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// Created by light on 20-1-6.
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//
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/*
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The compiler will try this overload since it's less generic than the variadic.
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T will be replace by int which gives us void f(const int& t, int::iterator* b = nullptr);
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int doesn't have an iterator sub-type, but the compiler doesn't throw a bunch of errors.
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It simply tries the next overload.
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编译器尝试此重载,因为模板化函数比可变参数函数更精确(通用)。T将被int取代，这将使我们得到
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void f(const int& t, int::iterator* b = nullptr); int 没有迭代器子类型，但是编译器不会抛出一堆错误。
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它只是尝试下一个重载。
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*/
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template<typename T>
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void f(const T &t, typename T::iterator *it = nullptr) {}
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// The sink-hole.
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void f(...) {}
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int main() {
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f(1); // Calls void f(...) { }
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}
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