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OpenAI launches research preview of Codex AI software engineering agent for developers — with parallel tasking

OpenAI has launched Codex AI software engineering agent as a research preview to compete with other AI coding tools like Windsurf and Cursor.
Unlike the previous Codex model, the new version is a cloud-based AI software engineering agent capable of executing multiple development tasks in parallel.
The new Codex is available for ChatGPT Pro, Enterprise, and Team users, with support for Plus and Edu users expected in the future.
It marks a significant advancement from the original Codex model, which focused on code generation and completion.
The new Codex can write features, fix bugs, answer codebase-specific questions, run tests, and propose pull requests in a secure cloud sandbox.
OpenAI envisions Codex as a tool that can operate autonomously to accomplish substantial work by interacting with the real world.
The Codex-1 SWE agent outperforms OpenAI's latest reasoning models on internal SWE tasks.
External use cases include Cisco, Temporal, Superhuman, and Kodiak utilizing Codex for various engineering tasks.
Codex executes tasks in an air-gapped environment with human review to ensure secure operation, making it more than just a model API.
OpenAI has launched Codex CLI for local development with updated pricing plans and a free rollout period.

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Medium

260

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How I Turned 30 Minutes of Reading into My Most Intimate Daily Habit (And Why You Should Too)

The author shares their journey of turning 30 minutes of reading into a daily sanctuary.
Initially struggling to find time to read, the author decided to dedicate just 30 minutes a day to the activity.
By choosing a book that captivated them, creating a peaceful reading ritual, and using a timer, the author found solace in reading.
The author emphasizes the importance of making time for oneself and nurturing intimacy through the act of reading.

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15 Likes

Medium

392

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Let’s walk through what actually happens, step by step, when you enter a URL like https://www.google

URLs like https://www.google consist of the protocol HTTPS that ensures secure communication between the browser and server via TLS encryption.
The www part of a URL is a subdomain that typically represents the public-facing area of a website, while the domain name google.com comprises the second-level domain (google) and the top-level domain .com.
When a URL is entered, the browser translates the domain name into an IP address through DNS servers, starting from a root server and ending with the authoritative server for the specific domain.
The connection between the browser and the server is established using TCP on port 443 for HTTPS, followed by a TLS handshake to secure the connection with encryption and exchange of session keys.

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Medium

451

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How to Create a Custom Corner Badge in Jetpack Compose

Custom corner badge in Jetpack Compose involves creating a strip-shaped badge that sits at a corner of a component, rotated by 45°, with customizable properties.
To achieve this, a custom Shape named CornerBadgeShape is defined for creating the badge's strip with adjustable roundness.
A sealed class BadgeCorner is used to position the badge in any of the four corners by representing each corner option along with its alignment and mirroring information.
The implementation involves defining the CornerBadgeBox composable that brings together the necessary elements and layout adjustments for creating the custom corner badge.

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Dev

255

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📚 The Ultimate React Interview Preparation Guide for Senior Software Engineers (2025)

This guide is tailored for senior software engineers preparing for React interviews.
It covers essential React fundamentals such as JSX, Virtual DOM, components, props, event handling, and lifecycle methods.
Advanced concepts like hooks, context API, error boundaries, React portals, and state management strategies are discussed.
Performance optimization techniques, routing, form validation, testing, TypeScript integration, and component design patterns are highlighted.
App architecture, scalability, security best practices, server-side rendering, deployment, integration, accessibility, and internationalization are essential topics.
Soft skills like leadership, mentorship, code reviews, architectural decisions, and collaboration are emphasized for senior roles.
The guide aims to prepare candidates with a holistic view of React, beyond basic concepts, for successful senior React interviews.
It stresses the importance of practical experience in mastering these topics for interview success.
Several aspects like soft skills, performance optimization, and leadership are crucial for senior software engineering roles.
The roadmap provided in this guide can be a valuable resource for excelling in senior-level React interviews.
For additional formats like a handwritten iPad roadmap, mind map, or PDF checklist, the author offers to convert the content upon request.

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15 Likes

Dev

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Why TypeScript is a Game Changer for Enterprise Backend

TypeScript is becoming essential for scalable, maintainable, and secure backend systems in enterprise environments.
Static typing in TypeScript helps prevent production failures by catching errors early and ensuring type safety.
Improved developer experience with TypeScript leads to better delivery speed and reduces time wasted on understanding code structures.
TypeScript enables stronger contracts across services in distributed enterprise systems, reducing duplication and mismatched payload bugs.

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Logrocket

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AI-powered e2e testing: Getting started with Shortest

AI-powered e2e testing is crucial for ensuring software applications work correctly, but traditional tools like Selenium and Cypress can be challenging to use due to steep learning curves and high maintenance costs.
AI-powered testing tools such as Shortest, Testim, Mabl, and Functionize utilize natural language processing and self-healing tests, making test creation and maintenance more accessible to individuals without extensive coding expertise.
Shortest, an open-source AI-powered testing library, simplifies the testing process by supporting natural language testing, chain testing for workflows, and API testing integration.
AI-driven tools like Shortest reduce test creation time significantly, automate test maintenance, and enhance collaboration among technical and non-technical team members.
These tools also offer scalability, reliability, and faster test execution across different devices and browsers, ensuring more robust testing processes for evolving applications.
Shortest features natural language testing, advanced workflow chaining, and integration with GitHub, CI/CD pipelines, and email validation for enhanced testing capabilities.
Testim emphasizes AI-powered stabilizers, low-code authoring, scalability, and integration with CI/CD tools.
Mabl focuses on intuitive AI, comprehensive testing support, performance insights, and team collaboration through CI/CD and Slack integration.
Functionize stands out for self-healing tests, visual AI, parallel testing, and root cause analysis, making it suited for large projects with changing requirements.
AI-powered testing tools offer several advantages over traditional frameworks, including time savings, reduced maintenance overhead, improved collaboration, scalability, and reliability.

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Dev

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Goodbye ClickOps, Say Hi to Terraform

A software developer shares their journey of moving from running HashiStack on AWS to a new automated cloud setup on Google Cloud Platform using Terraform.
The decision to use Terraform was influenced by its ease of defining infrastructure as code, support for multiple cloud providers, and the reliability of spinning up infrastructure with a single command.
Terraform enables reusability, idempotency, version control, and state tracking, providing consistency across environments and teams.
The developer first experimented with Terraform using Docker locally before transitioning to migrating their infrastructure to GCP, highlighting the ease and efficiency of the process.

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2 Likes

Dev

333

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This Week In React #234: TanStack DB | 0.80 RC, Expo, Legal, Re.Pack | Rslib, Composites...

TanStack DB is a new library with a blazing fast query engine and robust transaction primitives, built in collaboration with ElectricSQL.
React Server Components support is being worked on by the Vite team, along with a new React Query proposal.
Articles cover topics like using React context, creating custom React renderers, and managing state with actors in React.
React Native 0.80 RC.1 brings TypeScript improvements, support for radial gradient, and React 19.1 compatibility.
The React Native Legal library simplifies OSS license screens, while Re.Pack 5.1 focuses on Module Federation 2 support.
Expo introduces faster local development with build cache providers, and the Nightmare on Apple Street discusses challenges of iOS app publishing from Linux.
Rslib is a library development tool by ByteDance Web Infra Team, and Lightning CSS 1.30 brings relative color spec and nesting spec for pseudo elements.
React Universe Conf is scheduled for 2-4 September, React Native Skia 2.0 requires React 19 and RN 0.78 minimum, and Rive React Native 9.3 adds Data Binding support.
Clerk Billing allows setting up subscriptions without custom payment code, and WithFrame offers pre-built React Native templates.
Simon Grimm talks about React Native AI Apps, while React Native Radio discusses new architecture with Riccardo Cipolleschi.
Matt Pocock introduces Arrays and Objects composites, shape() function in CSS provides powerful drawing syntax, and Rslib aims to be an ideal library development tool.

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20 Likes

Medium

250

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Mastering Prompt Design in Vertex AI: My Journey into the Art of Prompting

Prompting is essential for designing intelligent conversations with large language models (LLMs) like PaLM and Gemini, impacting the quality of the output.
The course on Prompt Design in Vertex AI covers foundations of prompt design, strategies like zero-shot and chain-of-thought, best practices, and ethics in generative AI, offering both conceptual and practical knowledge.
Insights include the importance of prompt clarity, effectiveness of few-shot prompting, benefits of chain-of-thought prompting for reasoning, and the iterative nature of prompt design for optimal results.
Real-world applications include designing chatbots, improving content generation workflows, enhancing AI system safety, and accelerating prototyping through code generation and summarization prompts, making the skills immediately practical for developers, testers, and product managers.

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15 Likes

Medium

287

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The Memory Revolution: How AI Is Learning to Remember Us

AI systems are incorporating memory capabilities into their systems as the next step for customer loyalty.
Companies like OpenAI, Google, and Meta are utilizing various approaches to enhance memory in AI systems.
Memory feature in AI assists in creating stickiness, making users less likely to switch providers due to personalized interactions and preferences.
While the memory revolution in AI offers convenience and personalization, it also raises concerns about privacy and security vulnerabilities.

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17 Likes

Dev

282

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Launch of: Open Workout Spots

Open Workout Spots is a new platform launched to help people find and share outdoor workout locations worldwide.
Users can join country-based communities, add new workout spots to the map, share reviews, and build a healthy community in the Street Workout around the world.
The platform was built using React, Node.js, and MariaDB, and is currently in Beta version, welcoming feedback for further improvement.
Open Workout Spots is free to use and aims to help individuals discover new training places and connect with like-minded individuals.

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Dev

360

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Do You Really Know What's Inside Your Object? Or Are You Just Trusting for...in?

Object.entries(), Object.keys(), and Object.values() in JavaScript only return the object's own properties, not inherited ones.
For...in loop, unlike Object.entries(), fetches both the object's own properties and those inherited from the prototype chain.
To determine where each property comes from (own or inherited), use hasOwnProperty() method in JavaScript.
Understanding how prototyping and inheritance work in JavaScript is crucial to utilizing tools like Object.entries() effectively.

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21 Likes

PlanetPython

187

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Django Weblog: Our Google Summer of Code 2025 contributors

Django Weblog introduces their Google Summer of Code 2025 contributors.
Contributors and their projects include:
1. A. Rafey Khan's project focuses on enhancing Django Admin with keyboard shortcuts & Command Palette.
2. Farhan Ali Raza aims to bring django-template-partials into the core to improve Django's template system.
3. Saurabh K will work on automating processes within Django's contribution workflow to enhance developer experience.
The mentors and Django community are acknowledged for their support in this initiative.

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11 Likes

Medium

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The Rise of Tech Jobs in Sustainable Energy: A Bright Green Future.

The sustainable energy sector is experiencing rapid growth due to innovation, regulatory changes, and the need to address climate change.
Key trends driving tech job growth in sustainable energy include decarbonisation initiatives, digital transformation, and energy decentralisation.
Top in-demand tech jobs in sustainable energy include Data Scientists, AI Engineers, Software Developers, Cybersecurity Experts, and Blockchain Developers.
Industries leading in sustainable tech jobs include energy tech firms, major tech companies like Google and Microsoft, government projects, and consulting/engineering firms.

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