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Showing posts from December, 2022

How can the iOS notification content be modified before it is displayed?

In iOS, you can modify the notification content before displaying it using a Notification Service Extension . A Notification Service Extension is an app extension that is used to modify the content of a remote notification before it is displayed to the user. To modify the notification content, you can follow these steps: Create a Notification Service Extension target in your Xcode project. In the extension's Info.plist file, set the NSExtensionPrincipalClass key to the name of your extension's principal class. Implement the didReceive(_:withContentHandler:) method in your extension's principal class. This method is called when a notification is received by the system. In the didReceive(_:withContentHandler:) method, modify the content of the notification as desired. You can change the notification's title, subtitle, body, sound, badge, and attachments. Call the contentHandler parameter with the modified notification content. The system will then display the modified not

Why is Apollo Client a crucial tool for your GraphQL project?

Apollo Client is a popular JavaScript library for managing GraphQL queries and mutations in client-side applications. There are several reasons why you might want to use Apollo Client in your GraphQL application: Simplified data management : With Apollo Client, you can easily manage your application's data with a single, declarative API. This can help to simplify your code and make it easier to reason about. Real-time updates : Apollo Client includes built-in support for subscriptions, which allow you to receive real-time updates from your GraphQL server. This can be useful for applications that require real-time data, such as chat applications or real-time analytics dashboards. Caching and performance : Apollo Client includes a sophisticated caching system that can help to improve the performance of your application by reducing the number of network requests required to fetch data. The cache can also be configured to automatically invalidate data when it becomes stale, ensuring th

How to prevent memory leaks in Angular?

Memory leaks can occur in Angular applications when objects are not properly cleaned up and removed from memory. Here are some ways to check for memory leaks in an Angular application: Use the Chrome DevTools: The Chrome DevTools provide several memory profiling tools that can help you identify memory leaks in your application. You can use the "Heap Snapshot" feature to take snapshots of the memory usage over time and compare them to identify any growing memory usage that may indicate a memory leak. Use the Angular DevTools: The Angular DevTools provide a "Profiler" tab that can help you track the memory usage of your application components and services. You can use this tool to identify any components or services that may be causing memory leaks. Use the Memory Profiler plugin: The Memory Profiler plugin is a third-party tool that can be used to profile the memory usage of a

Build a Calendar Web Component with Stencil.js

In this post, I will be guiding you through the implementation of a basic calendar in Stencil. The design of the calendar will be kept simple. Pros of Web Components Framework Agnostic : Web components are compatible with a wide range of frameworks such as React, Vue, Angular, and can also be used without any framework at all. This flexibility is a significant advantage of web components. Future Proof : Web components leverage standard HTML specifications, CSS, and JavaScript, which enables modern browsers to support them natively. Easy to share/reuse . Employing web components simplifies the management of multiple projects or ecosystems that have distinct technology stacks, where component sharing or reuse is necessary No dependencies . One of the benefits that web components offer is the ability to connect a specific custom element without importing intricate dependencies into the project. This sets web components apart from popular frameworks. This tutorial assumes that you

How to create a CSV file using Javascript (client and server side)

You can create a CSV file using JavaScript by doing the following: 1. Define your data: Create an array of arrays, where each inner array represents a row of data, with each element representing a column. const data = [ [ 'Name' , 'Age' , 'Gender' ], [ 'John' , 25 , 'Male' ], [ 'Jane' , 30 , 'Female' ], [ 'Bob' , 35 , 'Male' ], ]; 2. Convert the data to CSV format: Iterate over the data array and convert each row to a CSV string using join() method. const csvRows = []; data.forEach(row => { const csvRow = row.join( ',' ); csvRows.push(csvRow); }); const csvData = csvRows.join( '\n' ); 3. Create and download the CSV file: Create a Blob object from the CSV data and create a URL from the Blob using URL.createObjectURL(). Then create a link and set the download attribute to the filename of the CSV file. const blo

new Function(): A better way to create a function from a string in Javascript

In JavaScript, the new Function method is a way to dynamically create new functions at runtime. It allows you to create a function using a string of code, which is evaluated when the function is created. It is supported by all major web browsers and is included in the ECMAScript specification, which is the official standard for JavaScript. The new Function method takes one or more string arguments that represent the parameters and the body of the function. Here's an example: const addFunction = new Function ( 'a' , 'b' , 'return a + b;' ); console.log(addFunction( 2 , 3 )); // Output: 5 In this example, we create a new function called addFunction using the new Function method. The first two arguments are the parameters of the function, and the third argument is the body of the function, which returns the sum of the two parameters. We then call the addFunction function with the argumen

Web component compilers: The difference between stencil and lit element.

In order to begin the comparison, it is necessary to have a clear understanding of certain concepts. Web component Web components are a set of standardized APIs and technologies that enable developers to create reusable UI elements that can be used across different web applications and frameworks. Web components are built using a combination of HTML, CSS, and JavaScript, and include three main APIs: Custom Elements : Custom Elements enable developers to create new HTML tags that encapsulate a specific set of functionality. Custom Elements can be registered with the browser using the customElements.define() method, and can include their own HTML templates, styles, and behaviors. Shadow DOM : Shadow DOM is a technique for encapsulating the styles and behavior of a web component inside a closed boundary, or "shadow tree". This allows web components to be used without affecting the styles and behavior of the rest of the web page and prevents naming collisions with other HTML elem

What is WebAssembly? The next-generation web platform.

Introduction WebAssembly is a binary format that is designed to be a low-level virtual machine for executing code in the browser. It is designed to provide a more efficient and secure way to run complex applications in the browser, by allowing developers to write code in languages other than JavaScript. WebAssembly is often used as an alternative to JavaScript for computationally intensive tasks, such as gaming, video, and image processing, and scientific simulations. With WebAssembly, developers can write code in languages like C, C++, and Rust, which are then compiled into WebAssembly modules that can be executed in the browser. One of the key benefits of WebAssembly is its performance. Because WebAssembly is a binary format that is executed directly by the browser, it can be much faster than interpreted JavaScript code. This can lead to significant improvements in the performance of web applications, particularly those th