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Building a File Upload App with TypeScript, React, and Auto-Drive API

A simple app for uploading files to a Distributed Storage Network (DSN) using Autonomy's Auto-Drive API leveraging RadzionKit repository has been created.
The app will consist of a single page with an API key entry and file management views.
API key is stored with the AutoDriveApiKeyGuard component which will allow to validate the API key dynamically.
Local storage is used to store API key.
The UploadFile component handles the upload process showing spinner while the file is being uploaded and displays an error message if the upload fails.
Uploading files is straightforward with the Auto-Drive SDK.
PaginatedView and useInfiniteQuery are used to handle pagination for querying the API.
UseCurrentFileProvider is used to provide the current file to its children.
The ManageFile component displays the file name or CID and includes buttons for downloading and deleting the file.
Deleting a file calls the Auto-Drive SDK’s markObjectAsDeleted function with the file’s CID, and we invalidate the list of files to refresh.

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Medium

The Evolution of Programming: From Manual Craft to Intelligent Design

In the early days, programming involved creating detailed algorithms and following explicit rules using languages like C, Java, and Python.
With the advent of machine learning, programming shifted towards teaching machines using examples and patterns rather than explicit instructions.
Today, programming is a collaborative effort between humans and machines, with machines processing large amounts of data, adapting to new contexts, and freeing up humans for creative problem-solving.
Challenges in this evolution include biases in training data, the complexity of modern systems, and ethical implications, but hybrid models and new tools are emerging to address these challenges.

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Dev

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A mid-career retrospective of stores for state management

The use of sophisticated stores can establish a view-level source of truth to organise feature-specific state, especially when an app requires different parts to access information specific to a particular function.
Angular’s MVC structure movements service classes that perform state passing between views; instead of sophisticated stores, observables with RxJS were used to subscribe to streams of asynchronous event data.
The disaster that arose from not using a state management solution led to long-winded, overly imperative ('if-abc, else if xyz, else if jkl...'), and much harder to maintain and debug code.
Stores that are not well-architected can act like daisy-chained information flows, leading to confusion and harder maintenance.
Creating a store for every app feature can lead to unnecessary complexity and coupling.
Using a store for state management is ideal when there is complex, domain-specific logic that needs to be updated carefully.
React's hooks and Context API and Vue's computed(), ref() and watch() functions offer 'lightweight' options for state management.
Where needed, it is wise to choose a strategy before entropy takes hold.
Frameworks aim to reactively update the UI when the data changes, manage side effects, and distinguish between local, shared, and global state.
It is easy to get to a place where no single pattern is used, and it may become unsustainable to manage state within one or two components, and this is where a store would help.

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Dev

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OOP Simplified: Breaking Down the 4 Core Principles

A constructor is a special method used to initialize an object when it is created in object-oriented programming.
Inheritance is one of the key principles of object-oriented programming (OOP) which allows a class to inherit properties and methods from another class.
Polymorphism enables the same entity (like a method or object) to behave differently in various scenarios.
Method overloading takes place in the same class. It is determined during compile-time and its key feature is that it has different parameter lists.
Method overriding is determined during run-time and happens between parent and child classes. Its key feature is that it has the same name and parameter list.
There are multiple types of inheritance namely single inheritance, multilevel inheritance, and hierarchical inheritance.
The 'this' keyword refers to the current object of the class and 'super' keyword is used to refer to the parent class in a child class.
Inheritance allows you to reuse code instead of rewriting it and create a hierarchy between classes for better organization.
Polymorphism enables the same interface to represent different behaviors depending on the context.
Encapsulation and Abstraction are two more pillars of object-oriented programming and will be explained in detail in the next blog.

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Dev

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JavaScript interview questions & answers with code

Write a function to flatten a nested JavaScript object.
Write a function to find duplicate values in an array.
Write a debounce function that limits the rate a function is called.
Write a recursive function to reverse a string.

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RealPython

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Basic Data Types in Python: A Quick Exploration

Python data types form the core of most Python programs, allowing you to handle numeric, textual, and logical data efficiently.
Python's basic data types include int, float, complex, str, bytes, bytearray, and bool.
You can check a variable's type using the type() function in Python.
Python has several built-in data types such as numbers, strings, bytes, and boolean values.

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RealPython

160

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A Practical Introduction to Web Scraping in Python

Python web scraping allows you to collect and parse data from websites programmatically.
You can build a Python web scraping workflow using libraries like urllib, Beautiful Soup, and MechanicalSoup.
Python is well-suited for web scraping due to its extensive libraries.
Data scraping may be illegal if it violates a website’s terms of use, so always review the website’s acceptable use policy.

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Medium

437

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Understanding Port Numbers vs Protocol Numbers: Why Both Matter in Networking

Port numbers are addresses to specific services running on a computer.
Protocol numbers are identifiers for Internet Layer protocols within the IP suite.
Port numbers focus on services, while protocol numbers focus on how data gets delivered.
Seamless coordination between protocol and port numbers ensures efficient and accurate data transfer.

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Medium

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How to crack a Microsoft interview

After applying, he got an online coding test Codility.
The test had 2 coding questions, and had 90 minutes to solve them.
Interview Round 1 (Technical Interview): Topics discussed were data structures and algorithms.
The interviewer asked questions related to connecting the 'previous' pointer of a binary tree and spiral order printing of a matrix.

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Dev

241

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Understanding Web Authentication: Sessions vs. JWTs

Session-based authentication involves the server creating a session upon login and sending a unique session ID to the client. The client includes the session ID with each request for the server to authenticate the user.
Key benefits of session-based authentication include easy revocation and centralized security. Challenges include distributed systems and added latency.
JWT-based authentication involves the server generating a signed JWT after successful login. The client stores the JWT and sends it with each request for the server to verify and authenticate the user.
Key benefits of JWT-based authentication include being stateless and scalable, and compatibility with microservice architectures. Challenges include token expiration and security trade-offs.

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Medium

276

Blue screen of death

The blue screen of death (BSOD) was initially designed to grab attention with its stark blue background and cryptic warning.
A programmer added a hidden Easter egg message as a joke, but it was rarely seen by users due to the quick appearance of the BSOD.
The BSOD appears when Windows encounters a critical error that it cannot recover from.
Although it may not be as common or terrifying as before, the BSOD remains an iconic part of Windows history.

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Medium

198

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Recently, Google fired the entire Python team. Is Python still relevant in the age of AI

Python continues to be one of the best programming languages globally, despite the recent decision by Google to lay off its entire Python team in the US.
Here are some reasons why Python is still relevant:
1. Easy to learn and use: Python has a simple syntax, making it beginner-friendly.
2. Free and open-source: Python is freely available for use.
3. Versatile: Python can be used on various platforms.
4. Powerful: Python is widely used in data science, web development, and machine learning applications.

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Medium

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Google Makes a Quantum Leap with New 'Willow' Chip

Google has made a major breakthrough in quantum computing with its new 'Willow' chip.
The chip can solve complex problems in minutes, which would take regular computers an unimaginable amount of time.
This achievement demonstrates the capabilities of quantum computers and their ability to solve previously unsolvable problems.
Hartmut Neven, the founder of Google Quantum AI, believes that Willow is the most convincing prototype of a quantum computer to date.

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Dev

348

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LeetCode Challenge: 12. Integer to Roman - JavaScript Solution 🚀

Converting integers to Roman numerals is a fun problem involving string manipulation and careful application of Roman numeral rules.
The problem is to convert an integer into its Roman numeral representation, following specific rules and using subtractive notation for certain values.
The JavaScript solution to this problem involves a greedy approach, starting with the largest Roman numeral and subtracting its value from the number while appending the numeral to the result.
The solution uses a predefined map of Roman numeral values and symbols, and iterates through the map to build the Roman numeral string.

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Dev

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#11 Next.js 15: Revolutionizing Server-Side Rendering (SSR) for Modern Applications😯🤓

Next.js 15 brings game-changing updates to Server-Side Rendering (SSR) for modern applications.
Key updates in SSR for Next.js 15 include transitioning to asynchronous request APIs for faster response times, updated caching semantics for more control over data freshness, enhanced hydration error reporting for easier debugging, and improved build times and SSR performance with Turbopack.
An example workflow for SSR in Next.js 15 is provided, demonstrating fetching and displaying user data dynamically using server-side API routes.
Next.js 15 makes SSR more powerful and developer-friendly, offering improved performance, caching control, error reporting, and build times. Upgrading projects to Next.js 15 can result in faster and more scalable applications with an enhanced user experience.

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