C++错误之一 ：invalid initialization of non-const reference of type ‘xxx&’ from an rvalue of type ‘xxx’
一、看代码 二、编译结果 三、分析和解决 就拿f(a + b)来讲，a+b的值会存在一个临时变量中，当把这个临时变量传给f时，因为f的声明中，参数是int&，不是常量引用，由于c++编译器的一个关于语义的限制。若是一个参数是以非const引用传入，c++编译器就有理由认为程序员会在函数中修改这个值，而且这个被修改的引用在函数返回后要发挥做用。但若是你把一个临时变量看成非const引用参数传
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相关文章
- 1. C++错误之一 ：invalid initialization of non-const reference of type ‘xxx&’ from an rvalue of type ‘xxx’
- 2. 报错 error: invalid initialization of non-const reference of type ‘XXX &’ from an rvalue of type‘XXX‘
- 3. C++引用报错:invalid initialization of non-const reference of type ‘std::string&’ from an rvalue of type
- 4. Cannot create class of type 'XXX'. Type 'XXX' not found.
- 5. [Mendix]CE1568The selected page xxx expects an object of type of xxx which is not available
- 6. Error: Expected resource of type xxx [ResourceType]
- 7. Received unregistered task of type ‘XXX’ Celery报错
- 8. Spring @Resource 注入报错 must be of type [xxx], but was actually of type [com.sun.proxy.$Proxy###]
- 9. IDEA--Could not autowire. No beans of xxx type found
- 10. @Override注解报错，The method xxx of type xxx must override a superclass method