React Props Explained: How to Pass Data Between Components

In Day 6 of the React Mastery Series on DEV Community, the tutorial covers props, short for properties, which allow data to be passed from parent components to child components in React. Props work similarly to function arguments, enabling a single reusable component to render different content based on the values it receives. Data flows strictly in one direction — from parent to child — and child components cannot modify the props they receive, keeping the application predictable. Developers are encouraged to destructure props for cleaner code and to set default parameter values for cases where a prop might not be provided. The lesson also introduces the special children prop, which allows content placed between a component's tags to be rendered dynamically, making components more flexible and reusable.

Russian missile barrage kills 9, injures 30 across Ukraine in two-day assault

Russia launched a large-scale missile and drone attack across Ukraine, killing at least nine people and wounding more than thirty others. Kyiv and its surrounding regions were among the areas targeted in what marked the second major aerial assault within two days. Ukrainian authorities confirmed that 27 ballistic missiles were fired during the strike, with only one successfully intercepted. The scale of the attack highlighted significant gaps in Ukraine's air defence capabilities. President Zelensky responded by urgently appealing to Western allies for additional air defence systems.

2,000-pound US bomb hits Iran family home; Centcom says 'we never target civilians'

Learning to Code in the AI Era: Understanding vs. Just Collecting Code

A developer who began coding in 2025 reflects on the unique challenge of learning programming when AI tools can already write functional code on demand. Unlike earlier programmers who adopted AI after mastering fundamentals, this generation faces a default temptation to skip understanding altogether. The author argues that the critical skill today is choosing to pause and learn from failures rather than instantly patching them with AI-generated fixes. He warns that working code you do not understand fails silently and dangerously — illustrated by a real concern over subtle row-level security bugs in his SaaS product that would produce no error, only a data breach. Drawing a parallel to blindly copying competitors' marketing funnels, he concludes that AI-generated code, like a copied strategy, offers no foundation for adaptation when circumstances change.

Google Gemini Adds Personal Avatars for Reusable AI Image and Video Creation

Google Gemini Apps has introduced personal avatars that users can create by recording their face and voice or uploading reference images. Once set up, an avatar is assigned an @username handle that can be called into prompts to generate images via Nano Banana or videos via Gemini Omni. The feature eliminates the need to re-upload personal visuals for every new creation, giving creators a consistent identity reference across multiple projects. Avatar-based video generation requires a Google AI plan, and the feature is currently unavailable in the EEA, Switzerland, and the United Kingdom. A related but separate Personal Intelligence feature, which uses Google Photos and connected context for personalized image generation, is rolling out in the United States to eligible Google AI Plus, Pro, and Ultra subscribers.

Why Developer Reputation Systems Fail Without Verifiable Evidence

Most developer profiles rely on self-reported claims that cannot be independently verified, making it difficult for reviewers to distinguish genuine contributions from exaggerated or team-shared work. GitHub commits and on-chain deployments appear objective but lack the contextual chain needed to confirm a developer's actual role. Identity fragmentation — multiple accounts, shared wallets, and varying contributor names — further complicates accurate attribution. Effective reputation systems must address scoring transparency, treating a critical bug fix differently from a minor README edit, and should clearly communicate confidence levels rather than producing opaque scores. Equally important is honest failure handling, where the system openly flags what was verified, what was skipped, and what requires manual review, making transparency a structural requirement rather than an optional feature.

Punjab Farmers Back E20 Fuel Programme, Cite Income and Crop Diversity Gains

Punjab farmers have come out in support of the E20 ethanol blending programme, pushing back against AAP leader Arvind Kejriwal's opposition to the policy. The farmers argue that the programme has provided them with an additional source of income beyond traditional crops. They also highlight that the initiative has served as a practical tool for crop diversification in the region. The pro-E20 stance among farming communities signals a divide between grassroots agricultural interests and the AAP leadership's position on the policy.

UPI hits record Rs 29.9 lakh crore in July

How to Tackle Legacy System Migration Questions in Senior Tech Interviews

Senior engineering interviews increasingly feature 'brownfield' prompts that ask candidates to migrate legacy systems rather than design new ones from scratch. These questions test risk sequencing, respect for existing systems, and comfort with constraints — skills that greenfield design prompts cannot assess. Interviewers focus less on the target architecture and more on how a candidate orders safe, reversible intermediate steps during a live migration. Experts suggest framing the answer around an ordered set of safe states rather than a final architecture diagram, with each step being observable and rollback-capable. This approach mirrors real-world staff-level engineering work, where renovating an occupied system is far more common than building fresh ones.

Delhi teen accuses friend of repeated rape; case surfaces after pregnancy

A 17-year-old Delhi girl has alleged that a male acquaintance raped her multiple times at a hotel in Gurugram between January and March 2026. The case came to light after the teenager was found to be pregnant and subsequently underwent a medical examination. Authorities registered a First Information Report under provisions of the POCSO Act and the Bharatiya Nyaya Sanhita. Police have launched an investigation and are conducting raids to locate and arrest the accused.

React Mastery Day 3: How to Set Up a React Development Environment with Vite

The third installment of the React Mastery Series guides developers through building a complete React development environment from scratch. The setup requires Node.js, npm, a code editor like Visual Studio Code, and a project scaffolding tool. Vite is recommended over the older Create React App due to its faster startup, quicker hot module replacement, and better overall development performance. Developers can bootstrap a new React project with TypeScript using a single npm command, which generates a structured folder layout including key files like main.tsx and App.tsx. Understanding each file's role — from the entry point in main.tsx to dependency management in package.json — helps developers navigate and troubleshoot their projects more effectively.

Codename One PR #5413 Adds Cross-Platform Calendar API with Cloud Sync and Conflict Handling

A new pull request (PR #5413) introduces com.codename1.calendar, a cross-platform calendar API for the open-source Codename One framework used to build native iOS, Android, desktop, and web apps from a single Java or Kotlin codebase. The API supports events, tasks, recurrence rules, attendees, alarms, and conference links through a unified data model, eliminating the need for platform-specific calendar intents. It integrates with Google Calendar, Google Tasks, Microsoft calendars, Microsoft To Do, CalDAV, and local providers such as Android's Calendar Provider and Apple EventKit. Conflict resolution is handled via optimistic concurrency tokens, returning a conflict error rather than silently overwriting newer provider changes. Offline mutations are opt-in through a sync engine that queues changes and lets developers resolve conflicts by choosing to keep the local version, the remote version, or a merged result.

Jadumani Singh credits Sarita Devi's mentorship for CWG silver medal

Indian boxer Jadumani Singh Mandengbam won a silver medal at the Commonwealth Games, acknowledging veteran boxer Sarita Devi as a key figure in his success. Sarita Devi provided consistent daily guidance and motivation throughout his campaign. The young boxer expressed gratitude for her unwavering support during his CWG journey. Jadumani views the silver medal as inspiration to train harder and raise his performance in upcoming competitions.

Adani Foundation Distributes Relief Kits to 8,000 Flood-Hit Families in Assam

The Adani Foundation has launched a flood relief drive targeting approximately 8,000 families across two districts in Assam. The relief effort covers families in the Nazira Sub-Division of Sivasagar district and the Silapathar area of Dhemaji district. Essential relief kits are being distributed to affected households in these regions. The initiative aims to provide immediate assistance to communities impacted by flooding in the state.

Rahul Gandhi Calls Delimitation a Betrayal of Tamil Nadu, Urges Parties to Oppose Bill

Congress MP Rahul Gandhi has strongly opposed the delimitation process, calling it a direct threat to Tamil Nadu's political interests. Speaking to reporters, he argued that the exercise is designed to weaken the state's representation. Gandhi urged all political parties, both regional and national, to unite against the bill and defeat it in the House. He went as far as saying that any party or individual supporting delimitation would be betraying Tamil Nadu.

Canada Quietly Signs UN Cybercrime Convention Amid Surveillance Concerns

Canada has signed the United Nations Cybercrime Convention, a move critics describe as a surveillance treaty in disguise. The decision was made with little public attention or debate, raising concerns among privacy advocates. The convention has been criticized for potentially enabling broad government surveillance powers beyond its stated cybercrime-fighting purpose. Legal and digital rights experts argue the treaty could undermine privacy protections and facilitate cross-border data sharing with authoritarian regimes.

CS Student Anushka Launches Blog to Document AI and Programming Journey

Anushka, a pre-final year B.Tech Computer Science (Artificial Intelligence) student, has launched a blog to publicly document her learning journey in AI and programming. She spent much of her first two university years on social life and distractions before a moment of self-reflection prompted her to take her technical education seriously. The turning point came during a summer break, when she acknowledged the intense competition in the tech industry and decided to start learning without waiting for the "perfect moment." Her blog aims to share insights on AI, computer science, and programming projects in an accessible way for fellow students on similar paths.

Dev Team Spent 3 Months Building Honest Web Search for a Local AI Agent

A development team set out to add web search to a local AI agent that runs entirely on a Mac without sending data to external servers, expecting the task to take one day but ultimately spending three months on it. The team chose to avoid third-party search APIs to preserve user privacy, instead building a native search path using browser technology already available on macOS. This decision meant solving problems like bot detection, inconsistent result parsing, and multiple interacting system failures without outside engineering support. The team documented roughly 25 debugging sessions, encountering repeated false victories where the feature appeared to work before new edge cases exposed deeper flaws. The detailed account was published to help other developers building AI systems that interface with real-world, uncooperative data sources recognize common failure patterns early.

Missing Validation Check Let Attacker Drain $1.14M From Aftermath Finance in 36 Minutes

Aftermath Finance, a decentralized perpetuals platform on the Sui blockchain, suffered a $1.14 million USDC exploit on April 29, 2026. An attacker exploited a signed integer vulnerability that allowed a negative fee value to pass through without proper validation. This flaw caused collateral calculations to become artificially inflated, enabling the attacker to withdraw funds they were not entitled to. The entire attack was executed in just 36 minutes before it could be detected or stopped. Security analysts noted that a single additional assertion in the code would have been sufficient to prevent the exploit entirely.

Ladakh Police file zero FIR against influencer over alleged anti-Amit Shah Facebook video