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Key Takeaways for Software Engineers on Git Internals

Git is a content-addressable key-value store with an elegant and powerful object model.
Git's internal model includes four object types: blob, tree, commit, and tag.
Git tracks content, not files, allowing for efficient detection of renames and changes.
Understanding Git internals helps in debugging, optimization, customization, and trust.

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Dev

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Go Struct: What Happens When You Add a '_' Field?

The Go programming language often uses the underscore (_) as a placeholder for various purposes, but using it as a field within a struct is less common.
Adding an underscore (_) field in a struct enforces named field initialization, preventing the use of positional initialization.
Positional initialization with an underscore (_) field will result in compilation errors due to too few values or implicit assignment to an unexported field.
By using named field initialization, code readability improves, error prevention increases, and struct initialization becomes more explicit in Go programming.

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Dev

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How to Convert String Time to Timestamp in Java for MySQL?

To convert a time format string into a Timestamp in Java for MySQL, follow these steps:
Step 1: Import necessary packages including SQL-related classes and time formatting utilities.
Step 2: Convert the string time to a LocalTime object using DateTimeFormatter.
Step 3: Convert the LocalTime object to a Timestamp by providing a date (which can be arbitrary) and ignore its importance in the outcome.
Step 4: Insert the Timestamp data into your MySQL database table using JDBC to ensure proper database operations.

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Dev

237

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JTBD + OKRs: A Practical Guide for Customer-Focused Teams

The article discusses the importance of focusing on customer jobs rather than building features customers may not need.
It introduces the concept of Jobs-to-be-Done (JTBD) and Objectives and Key Results (OKRs) frameworks to achieve customer-centric outcomes.
JTBD emphasizes understanding what progress customers seek in their lives, leading to building products based on desired outcomes.
OKRs help in setting measurable targets with clear objectives and key results, focusing on outcomes rather than tasks.
The article explains the synergy between JTBD and OKRs, where customer jobs inform goals that are tracked through measurable results.
Practical steps are provided to uncover customer jobs through timeline interviews, mapping their decision journey, and defining desired outcomes.
The process involves creating a customer-centric vision, selecting key outcomes, turning outcomes into objectives, defining measurable key results, and tracking progress.
Common pitfalls to avoid include leading questions in JTBD interviews and task-based key results in OKRs.
Real-world examples demonstrate how companies transformed their products using JTBD and OKRs, focusing on customer-centric outcomes.
The mindset shift from outputs to outcomes is emphasized, where customer success and progress are prioritized over technical features.

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Dev

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Migrating Maven Namespace to Central Portal

OSSRH is reaching end of life on June 30, 2025, and users need to migrate their namespaces to the Central Portal as soon as possible.
Steps for self-migration include updating Maven plugins and GitHub actions for publishing Java artifacts to Maven Central.
To migrate, users must click 'Migrate Namespace' on the Namespaces page and update the pom.xml with the new central-publishing-maven-plugin configuration.
For GitHub actions, users need to generate a user token, store it as GitHub secrets, and update the GitHub actions configuration to ensure successful publishing to Maven Central.

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Medium

173

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How to Export a Build File for iOS Simulator in Xcode

Exporting a build file for iOS Simulator in Xcode is crucial for testing, sharing with QA teams, and running UI automation.
Xcode does not have a direct 'one-click export' option for simulator builds, but the process is straightforward once you know where to look.
To export a build file for the simulator in Xcode, ensure you select a simulator target and then locate the built .app file in the DerivedData directory.
By following these steps, you can easily export the build file for the iOS Simulator, compress it, and share it for further use, saving time and streamlining development.

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Dev

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Transform Your Website into a Mobile App with AI: A Step-by-Step Guide

Converting your website into a mobile app can significantly boost engagement, user experience, and conversions in today's mobile-first world.
AI-powered tools have made this transformation accessible, affordable, and requiring minimal technical knowledge.
Benefits include faster loading, smoother navigation, offline access, improved engagement, higher conversion rates, and powerful marketing capabilities.
Platforms like Twinr, Instance, and Appy Pie leverage AI for website-to-app conversion, offering various features and customization options.
The step-by-step process involves evaluating your website, choosing the right AI tool, creating the app foundation, customizing the interface, adding mobile-specific features, testing thoroughly, preparing for app store submission, and launching and promoting.
Real-world success stories include H&M, Calendly, and Canva successfully transitioning websites into thriving mobile apps.
Challenges like performance issues, feature parity, user adoption, and maintenance burden can be addressed with proper strategies.
Future-proof your mobile app by focusing on regular updates, user feedback, performance monitoring, and staying current with platform changes.
Transforming your website into a mobile app using AI tools is a powerful way to enhance your digital presence and user engagement.
By taking advantage of tools like Instance, Twinr, or Appy Pie, businesses can make this transition successfully and cater to the growing mobile app market.

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Dev

169

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Comparing No-Code App Builders: Which Platform Is Ideal for Your App?

No-code platforms have revolutionized app development, offering visual interfaces and pre-built templates to create apps without coding.
Consider factors like complexity, target platforms, design flexibility, and budget when choosing a no-code platform.
Leading platforms include Instance for beginners, Replit for code flexibility, and Lovable for conversational building.
Other notable options include Glide for data-driven apps, Adalo for native mobile experiences, and Bubble for complex applications.
Real-world success stories demonstrate the versatility and effectiveness of no-code platforms for various applications.
When selecting a platform, define requirements, assess budget, test options, and consider integration capabilities and future scalability.
The future of no-code development includes AI advancements, better integration, and platforms blurring traditional development boundaries.
Instance, Replit, and Lovable offer unique features catering to different user needs in the evolving landscape of no-code app development.
Evaluate your needs, technical comfort, and long-term goals to choose the ideal platform to bring your app vision to life.
No-code development presents opportunities for entrepreneurs and businesses to innovate cost-effectively and build complex applications without traditional constraints.
Experiment with free trials and tiers offered by different platforms to find the best fit and embrace the empowering potential of no-code app development.

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Dev

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🐕 Why We Built a Lightning-Fast Static Website for French Dog Parks with Astro.js

Parcs Canins is a fast, SEO-friendly static website listing secure, fenced dog parks in France, built with Astro.js.
The idea behind Parcs Canins was to provide dog owners with a simple, fast way to find safe off-leash parks, focusing on speed, simplicity, and search engine visibility.
Astro.js was chosen for Parcs Canins due to its fast performance with zero JavaScript and built-in SEO tools, allowing for modern component-based development while keeping the output lean.
The tech stack for Parcs Canins includes Astro.js framework, TailwindCSS for styling, and content management through Markdown and .astro files, with features like SEO-optimized park listings, fast load times, privacy-first design, and accessibility.

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TechCrunch

382

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ChatGPT’s deep research tool gets a GitHub connector to answer questions about code

OpenAI enhances its AI-powered 'deep research' feature with a GitHub connector for analyzing codebases.
The GitHub connector allows developers to ask questions about codebases, engineering documents, and more.
ChatGPT Plus, Pro, and Team users will have access to the GitHub connector, with Enterprise and Edu support coming soon.
OpenAI also introduces fine-tuning options for developers to customize newer models like o4-mini and GPT-4.1 nano for specific applications.

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Johndcook

292

Square root of a small number

The recent post discusses an algorithm in quaternion and rotation matrices conversions.
There is a risk of taking square root of a nearly negative number in floating point arithmetic.
The post explores the need to handle cases where the argument for square root could be small or slightly negative.
Authors suggest an alternative expression that is numerically less sensitive to avoid precision loss.

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Medium

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I Got My First Backend Job with Java — Here’s What I Wish I Knew

Lessons learned by a new backend developer working with Java.
Mastering Java's syntax is not enough, understanding its ecosystem and philosophy is crucial for backend development.
Java is robust, enterprise-grade language designed for scalability, reliability, and maintainability.
Building systems with Java requires handling real-world complexity.

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Dev

324

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Stuck on Side Projects? GitHub’s Hiding Your Exit Plan

Many developers face idea overload and lack of progress with side projects, leading to 'Side Project Purgatory™.'
One strategy to overcome this is to start from existing open-source projects that already fulfill a significant portion of your requirements.
GitHub offers solutions to common roadblocks faced by indie developers, such as lack of inspiration, getting stuck post-MVP, experimenting with AI, and dealing with failed launches.
Utilizing pre-loved GitHub projects allows developers to build upon stable foundations, rather than starting from scratch every time.
The focus is on making improvements, monetizing smartly, and creating niche products from existing open-source projects.
By enhancing existing projects with unique features and design elements, developers can create successful products and even monetize them effectively.
GitHub offers a variety of curated bundles like APIs, infrastructure projects, Rust repositories, and data bundles to aid developers in their projects.
The ultimate goal is to work smarter, not harder, by using existing resources and building upon them to achieve progress and success in side projects.
Devs are encouraged to leverage GitHub resources as a shortcut, a system, and a spark to avoid side project burnout and enhance productivity.
The article presents various solutions and steps to help developers navigate side project challenges and turn their ideas into successful products, highlighting the importance of practicality and efficiency in project development.
Through GitHub's vast resources and existing open-source projects, developers can find inspiration, overcome hurdles, and create innovative products that cater to user needs and preferences.

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Dev

333

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How to Turn GitHub Projects Into Real Money

GitHub projects can be turned into real money by spotting opportunities, validating ideas, and building value ethically and legally.
Developers can leverage GitHub as a goldmine for business ideas, utilizing abandoned repos as an advantage.
Steps include picking a niche, finding open-source projects, improving or productizing them, and monetizing through various methods.
Examples like Plausible Analytics and Outline showcase how businesses have evolved from existing GitHub projects.
Utilizing curated GitHub bundles can save time, help find niche projects, and expedite the launch process.
Open-source projects serve as a platform for launching real businesses, requiring coding skills and entrepreneurial vision.
Emphasize the importance of leveraging curated bundles, validating ideas, polishing projects, and monetizing them for success.
GitHub provides ample opportunities for turning ideas into profitable ventures, encouraging action and innovation.
The formula involves open-source projects as a business opportunity, utilizing curated resources, validating ideas, and iterating for revenue.
By creatively repackaging existing GitHub projects, developers can build unique offerings and potentially profitable ventures.

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Dev

242

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Building a Comprehensive Observability Stack for a .NET API with Core Banking Integration

The article covers the implementation of a comprehensive observability solution for a .NET API integrating with a core banking system.
The solution architecture included structured logging with Serilog, distributed tracing with OpenTelemetry and Jaeger, metrics collection with Prometheus, visualization with Grafana, and health checks for the API and its dependencies.
Implementation steps involved setting up structured logging, adding OpenTelemetry for distributed tracing, configuring metrics collection, implementing health checks, and using Docker Compose for observability infrastructure.
Challenges faced included Prometheus integration issues, Docker networking problems, and port conflicts, but the final result provided comprehensive monitoring capabilities with structured logs, distributed traces, and custom metrics in Grafana.

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