我在UIPageViewController中有一个断言失败.
Assertion failure in -[UIPageViewController _flushViewController:animated:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit/UIKit-3512.60.12/UIPageViewController.m
Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason:
'Don't know about flushed view <UIView: 0x15a5bff30; frame = (0 0; 768 903); autoresize = W+H; layer = <CALayer: 0x15a5bfc30>>'
*** First throw call stack:
(0x181ebedb0 0x181523f80 0x181ebec80 0x182844154 0x1877a1c40 0x1877a1da8 0x18784e9c4 0x18784ebfc 0x187852318 0x18784dd98 0x1870101e4 0x1849a2994 0x18499d5d0 0x1870270a4 0x10028b620 0x100348b78 0x100379f54 0x100168878 0x18733d568 0x1870330b4 0x1870f1a00 0x18733e71c 0x1870f832c 0x18703536c 0x18700f7ac 0x18700ed40 0x18700eba8 0x1873283b4 0x18700d5e8 0x18784ebd4 0x187852318 0x18784df3c 0x1871db550 0x1871daf6c 0x101c9b768 0x1849f0234 0x1849f00e8 0x182135e54 0x181e5d030 0x181e757d4 …Run Code Online (Sandbox Code Playgroud) 微软发布了不支持 ActiveX 的 Edge 浏览器。
我有一个应用程序需要从 Windows 注册表中获取信息,所以我对 ActiveX 的替代方案有一些疑问:
有没有办法从 Edge 或类似的东西(比如 Chrome 中的本机消息传递)与本机应用程序(可以从 Windows 注册表中读取)进行通信?
有没有办法从 Edge、Javascript 等直接访问 Windows 注册表?
有一个带有构造函数的Complex类,它为RVO打印一条消息.
我在gtest中测试了Complex的operator +方法.
如果发生RVO,请打印"Complex !!" 消息3次.
但是有"复杂!!" 消息5次.
我想,RVO没有发生.
我用c ++ 98和c ++ 11编译了这段代码
为什么不发生RVO?
#include <stdio.h>
class Complex {
friend Complex operator+(const Complex&, const Complex&);
public:
Complex(double r = 0.0, double i = 0.0) : real(r), imag(i) { printf("\nComplex!!\n");}
Complex(const Complex& c) : real(c.real), imag(c.imag) {}
Complex& operator=(const Complex& c) {
real = c.real;
imag = c.imag;
return *this;
}
~Complex() {}
private:
double real;
double imag;
};
Complex operator+(const Complex& lhs, const Complex& rhs)
{
return Complex(lhs.real + …Run Code Online (Sandbox Code Playgroud)