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86👍 When setting up your server, be sure to specify the path: var io = require(‘socket.io’)(http, { path: ‘/myapp/socket.io’}); io .of(‘/my-namespace’) .on(‘connection’, function(socket){ console.log(‘A user connected with ID %s’, socket.id); socket.on(‘my-message’, function (data) { io.of(‘my-namespace’).emit(‘my-message’, data); // Alternatively, you can use socket.emit(…) console.log(‘Broadcasting my-message’, data); }); }); When connecting from the client, make sure to … Read more

79👍 ✅ Perhaps you are looking for a solution using response.write. response.write(“foo”); response.write(“bar”); //… response.end() res.send implicitly incorporates res.write followed by res.end. While calling res.send multiple times will work for the first call, subsequent calls will not have any effect. This is because the first res.send call concludes the response and prevents further additions to … Read more

Explanation: unable to make field private final java.util.comparator java.util.treemap.comparator accessible This error message occurs when you are trying to access a private final field in the java.util.TreeMap class, specifically the java.util.Comparator field. This field is used by the TreeMap to determine the order of elements in the map. The error message indicates that you are … Read more

Error Explanation: The error message “cannot hit test a render box with no size” is typically encountered in web development when you are trying to perform a hit test on an HTML element that has no size. A hit test is a process of determining if a point, usually the position of a mouse click, … Read more

Explanation: When you receive the error message “SQLSTATE[IMSSP]: An invalid attribute was designated on the PDO object,” it means that you have used an invalid attribute while trying to configure or modify the PDO object. The PDO (PHP Data Objects) extension provides an interface to connect and work with different databases in PHP. It allows … Read more

Unable to Evaluate the Expression Method Threw ‘org.hibernate.LazyInitializationException’ Exception The org.hibernate.LazyInitializationException is a common exception in Hibernate when accessing a lazy-loaded entity or collection outside the session. This exception typically occurs when trying to access uninitialized properties of an entity that was loaded lazily. Let’s understand this exception with an example. Suppose we have two … Read more

Explanation: An error message stating ‘Type ‘any’ cannot conform to ‘view” means that the compiler encountered a mismatch of types. The variable or expression of type ‘any’ cannot be assigned or used in place of a variable or expression of type ‘view’. To understand this better, let’s consider an example: type MyView = { name: … Read more

The “spring.config.import” property is used in Spring Boot applications to import external configuration files. By default, Spring Boot looks for an application.properties or application.yml file in the classpath to load the configuration values. However, if you want to import additional configuration files, you can use the “spring.config.import” property. This property should point to a file … Read more

In order to fire a “click” event on a specific DOM element, you need to have a reference to that element. There are several ways to obtain a reference to a DOM element in JavaScript, and once you have that reference, you can use various methods to trigger the “click” event on it. Here’s an … Read more

When you encounter an error message stating “no debugger available, cannot send ‘variables’”, it typically means that you are trying to debug your code without access to a debugger tool or the necessary environment variables are not set up correctly. Here’s an explanation of the issue and a possible solution: 1. What does “no debugger … Read more