我已经编写了一个自定义的类加载器'JarClassLoader',它本身运行良好,因为下面的测试用例是绿色的:
public void testJarClassLoader() throws Exception
{
JarClassLoader cl = new JarClassLoader();
cl.addURLsByClassPath("lib/a-lot-of-jars.jar|lib/more-jars.jar", "\\|");
Class c = cl.loadClass("com.packagep
我正在按照这个实现一个vaadin应用程序。
应用程序的状态由多个工作线程修改。因此,为了通知应用程序其状态更改,我添加了一个进度指示符。
阅读进度指标样本,我看到如下:
// All modifications to Vaadin components should be synchronized
// over application instance. For normal requests this is done
// by the servlet. Here we are changing the application state
我想知道如何在下面的视图中更改@State属性包装器showErrorAlert
struct SettingsView: View {
@State private var shouldPresent = false
@State var showErrorAlert = false
var body: some View {
VStack {
Form {
Text("Settings")
.font(.title)
Button("Import source d
#include <stdio.h>
int main(){
int i=1;
int * p = &i;
*(p++)=4;
printf("%p\n", p); //0x7ffc000f47c8
printf("%u\n", p); //956816552 (which is 0x7ffc000f47c8 as unsigned integer)
printf("%u\n", *p); //956816552 (I would expect *p to be the value of whatever i