我想使用正则表达式组替换#include <iostream>
#include <memory>
struct Base {
std::shared_ptr< Base > Clone() const {
std::cout << "Base::Clone\n";
return CloneImplementation();
}
private:
virtual std::shared_ptr< Base > CloneImplementation() const {
std::cout << "Base::CloneImplementation\n";
return std::shared_ptr< Base >(new Base(*this));
}
};
struct Derived : public Base {
std::shared_ptr< Derived > Clone() const {
std::cout << "Derived::Clone\n";
return std::static_pointer_cast< Derived >(CloneImplementation());
}
private:
virtual std::shared_ptr< Base > CloneImplementation() const override {
std::cout << "Derived::CloneImplementation\n";
return std::shared_ptr< Derived >(new Derived(*this));
}
};
int main() {
Base *b = new Derived;
b->Clone();
}
中的字符串，就像跟在golang中一样：
python那么如何在golang中实现呢？
答案 0 :(得分：7)
替换使用$1，$2等。例如：
re := regexp.MustCompile(`(foo)`)
s := re.ReplaceAllString("foo", "$1$1")
fmt.Println(s)