?? explicitkeyword.cpp
字號:
//: C12:ExplicitKeyword.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 2000
// Copyright notice in Copyright.txt
// Using the "explicit" keyword
class One {
public:
One() {}
};
class Two {
public:
explicit Two(const One&) {}
};
void f(Two) {}
int main() {
One one;
//! f(one); // No auto conversion allowed
f(Two(one)); // OK -- user performs conversion
} ///:~
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