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ProgrammingDEV Community ·

GeoIcons brings 422 country and area icons to Angular as standalone components

A new open-source package called GeoIcons fills a long-standing gap in Angular's icon ecosystem by offering 422 country and area icons as standalone components. Each icon is identified by its ISO 3166 alpha-2 code in PascalCase, allowing developers to import only the icons they use, keeping bundle sizes lean. The package requires Angular 15.1 or newer due to its use of hostDirectives, with self-closing tag syntax supported from Angular 16 onward. Styling is handled through explicit inputs — including size, stroke, fill, and aria-label — since Angular does not support attribute spread. Installation is a single npm command, and a live catalog is available at geoicons.io.

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ProgrammingDEV Community ·

Blazor Date Input Bug: Why Visible UI State Can Silently Diverge from Model Data

A debugging case in a Blazor application revealed that a date field appeared correctly filled in the browser while the underlying .NET model property remained null, triggering a misleading validation error. The root cause was a mismatch between the native HTML date input's ISO wire format and a culture-aware component converter expecting a locale-specific short-date pattern. This silent divergence meant user selections were never actually bound to the model, and loading existing dates could render empty controls, risking unintended data loss on save. The fix adopted a date-picker component that unified its UI and binding contract, eliminating the format disagreement. The broader lesson is that UI visibility does not guarantee application state binding, and explicit ownership of formatting and parsing logic is essential at every field boundary.

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ProgrammingDEV Community ·

How to Show AI Video Generation Costs to Users Before They Hit Render

A developer building an image-to-video workflow around Grok Imagine 1.5 Preview has outlined a design pattern that displays estimated credit costs to users in real time, before they submit a generation request. The approach ties cost estimation directly to form controls — duration and resolution — so the displayed price updates instantly as users adjust settings, rather than revealing charges only after submission. Credit rates in the described implementation vary by resolution, with 480p charged at 1.6 credits per second and 720p at 3 credits per second, rounded up to a whole credit. The developer argues that surfacing costs client-side is a product-design issue, not merely a billing one, since hidden pricing can lead new users to unknowingly exhaust limited free allowances on a single render. The post also recommends structuring each AI model as a data object to prevent invalid control combinations and reduce inconsistencies between the interface, documentation, and underlying API.

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ProgrammingDEV Community ·

How a Misused useEffect Hook Caused an Infinite Render Loop in React

A React developer shared how their app froze due to an infinite re-render loop triggered by a misconfigured useEffect hook with an incorrect dependency array. The bug caused CPU usage to spike and the browser to become unresponsive, initially making the issue hard to trace. Using browser Developer Tools, the developer identified that the effect was re-running on every render because its dependencies were being recreated each cycle. The fix involved correcting the dependency array and memoizing values with useMemo and useCallback to prevent unnecessary re-renders. The experience highlighted how small mistakes in React hooks can cause significant performance issues and underscored the value of careful dependency management.

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ProgrammingDEV Community ·

How Engineers Built a Secure MFA Session Handoff System for Shared Retail Tablets

An enterprise retail environment required a custom multi-factor authentication platform to handle secure session transfers between shared in-store tablets and customers' personal phones during transactions. The core challenge involved allowing multiple roles — employees, managers, and customers — to interact with the same device while keeping each session isolated and tamper-proof. Engineers designed a serverless architecture using AWS AppSync, Lambda, DynamoDB, and CloudFront, with a React and TypeScript single-page application on the customer side. Short-lived QR codes were used to initiate session handoffs, with strict controls preventing reuse, URL exposure, and session hijacking across devices. The system transformed what appeared to be a simple MFA feature into a distributed identity and real-time communication problem requiring careful trade-offs in security, concurrency, and infrastructure design.

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ProgrammingDEV Community ·

Developer Builds Core Chat UI Component on Day 166 of MERN Stack Journey

A developer shared progress on Day 166 of their self-directed full-stack engineering track on the DEV Community platform. The update focused on building ChatContainer.jsx, the main messaging canvas component for a personal project called QuickChat. Key features implemented include dynamic chat alignment, text bubble rendering, image attachment support, and input controls. The developer used conditional flexbox logic tied to authentication state to distinguish sender and recipient message positions. The update was accompanied by screenshots of the UI and VS Code development environment.

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IndiaNDTV ·

US Weighs Military Strikes on Iran This Weekend, Trump Signals Approval

The United States is reportedly considering military strikes against Iran as early as this weekend, with President Trump signaling approval for a forceful response. Officials are actively discussing the timing and scope of potential action. Planners are reportedly aiming to conclude any strikes before global financial markets open on Monday, reflecting concerns about economic fallout. However, no final decision or endpoint to the deliberations has been confirmed. The development marks a significant escalation in tensions between Washington and Tehran.

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ProgrammingDEV Community ·

Developer Adds Profile Update Module to MERN-Based Chat App QuickChat

A self-taught developer reached Day 165 of their MERN stack learning journey by building a profile update module for QuickChat, a real-time messaging application. The implementation uses the FileReader API to convert selected images into Base64 strings before sending them to the backend, while URL.createObjectURL enables instant image previews on the client side. Profile updates are managed through an AuthContext provider, ensuring changes reflect across the entire application state immediately. The UI was styled using Tailwind CSS utilities to maintain visual consistency with the rest of the app. Next steps include connecting the backend to handle Base64 image storage in MongoDB and implementing real-time socket message synchronization.

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IndiaTimes of India ·

Chhattisgarh dancer with 93% boards score claps back at BJP's unauthorised post

The BJP's Chhattisgarh social media handle posted a video contrasting two Gen Z attitudes, using footage of dancer Urwashi Palandurkar without her consent. Palandurkar responded with a sarcastic rebuttal video that quickly went viral online. In her response, she highlighted her 93% board exam score and extracurricular achievements to challenge the post's implied narrative. She argued that academics and the arts are not mutually exclusive, defending her right to dance publicly. Her reaction video gained widespread attention and was subsequently shared by several political leaders.

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IndiaTimes of India ·

Kangana Ranaut Defends Herself Against Trolls Sharing Her Film Clips

Bollywood actress and BJP MP Kangana Ranaut has hit back at social media users who criticized her recent remarks by sharing clips from her movies. She argued that her on-screen performances should not be used to judge her off-screen conduct or opinions. The controversy stems from Ranaut's earlier description of videos from CJP-led protests as 'puke-inducing' and 'crass.' CJP spokesperson Saurav Das also publicly responded to Ranaut's comments directed at him. The episode has reignited debates around protester conduct and the responses of public figures to dissent.

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ProgrammingDEV Community ·

Nex Launches as Open-Source Platform for Sharing Reusable Software Architectures

Nex, an open-source architecture distribution platform, has moved from closed alpha to public availability for all developers. The platform lets users package, share, and reuse software architectures as modular components called Recipes across different projects. Nex is language and framework agnostic, supporting projects built with Java, Python, TypeScript, Rust, Go, Flutter, and more. Recipes are hosted on GitHub repositories with version control via GitHub Releases, and installations are secured through real-time SHA-256 hash verification. Although still in alpha, the platform is described as stable for production use, and developers are encouraged to publish Recipes for their preferred languages and frameworks.

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ProgrammingDEV Community ·

How one developer made AI-generated code safe to merge without manual review

A developer running multiple AI coding agents in parallel found the daily volume of code changes exceeded what any human could feasibly review in a working day. Rather than reducing output, he restructured his workflow so that potential issues are caught automatically before code reaches the review stage. He achieved this by enforcing strict linting rules — including complexity limits and TypeScript strict presets — as hard errors that AI agents, unlike human engineers, never push back against. Exceptions to these rules are tracked in a visible config file with written justifications, making rule erosion easy to spot. Critical logic is also extracted into pure, tested functions so that decisions made by automated tools remain verifiable and auditable.

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ProgrammingDEV Community ·

Script Automates STL File Validation Before Sending to Manufacturers

Engineers often lose days to back-and-forth emails when STL files sent to manufacturers contain fixable errors such as non-watertight geometry, missing units, or flipped normals. The STL format stores only a flat list of triangles with no topology, unit declarations, or enforced normal direction, making these errors invisible inside CAD software but problematic during manufacturing. A roughly 150-line Python script using the trimesh library can automatically detect these common issues in milliseconds. The script checks for open edges indicating holes, infers unit mismatches that could shrink a 60 mm part to 0.06 mm, and validates surface normals. It exits with a non-zero status on failure, making it suitable for direct integration into a continuous integration pipeline.

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ProgrammingDEV Community ·

Developer Builds CSS-Only Salvadoran Pupusa Scene With Day-Night Light Switch

A developer from El Salvador has created a fully CSS-rendered illustration of a traditional pupusa table as a submission to the Frontend Challenge Comfort Food Edition. The artwork depicts pupusas — El Salvador's national dish of stuffed corn tortillas — served with curtido and tomato salsa, evoking the atmosphere of a nighttime street food stall. Built using only CSS gradients, blend modes, and border-radius with just 15 lines of JavaScript for class toggles, the piece features no images, SVG, or external libraries. Interactive buttons let users pour salsa over the pupusas or switch the scene to a candlelit night mode using a single overlay div with mix-blend-mode. The project also incorporates accessibility features including ARIA roles, labeled buttons, and a prefers-reduced-motion setting that freezes animations rather than removing them entirely.

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IndiaNDTV ·

Commercial LPG Cylinder Prices Cut by Rs 192; ATF Rates Rise by Rs 5/Litre

The government has revised fuel prices, bringing relief to commercial LPG users with a reduction of Rs 192 per cylinder. At the same time, Aviation Turbine Fuel (ATF) rates have been increased by Rs 5 per litre. The commercial LPG price cut is expected to benefit businesses such as hotels and restaurants that rely on bulk gas supply. The revised rates vary by city and came into effect with the latest price revision cycle.

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IndiaTimes of India ·

PM Modi Inaugurates Bhogapuram Airport in Andhra Pradesh Worth Rs 5,000 Crore

Prime Minister Narendra Modi inaugurated the Bhogapuram International Airport in Andhra Pradesh, a project valued at approximately Rs 5,000 crore. The airport is located in Bhogapuram, in the Vizianagaram district of Andhra Pradesh. The inauguration marks a significant infrastructure milestone for the region. The new airport is expected to boost connectivity and economic development in the area.

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