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How to Build a React PDF Viewer for Next.js in Minutes

The article explains how to easily add a React PDF viewer to Next.js apps using the React PDF library.
React PDF offers a React-first approach, is customizable, responsive, high performance, and well-documented.
The tutorial guides through setting up a Next.js project on StackBlitz and integrating React PDF.
Steps include installing the @pdf-viewer/react package, setting up the viewer, and creating a reusable PDF viewer component.
Customizing the PDF viewer to match branding and replacing toolbar icons are covered.
React PDF is recommended for simple PDF reading, document workflows, AI-powered tools, and business apps.
The library handles PDF rendering efficiently, allowing developers to focus on building great features.
The article provides a thorough guide for implementing React PDF in a Next.js project.
It also mentions a React PDF Starter Toolkit for faster setup with ready-to-use templates for React and Next.js.
Overall, React PDF simplifies the process of integrating a PDF viewer and enhancing the PDF viewing experience in projects.

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4 Likes

Medium

226

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If You Can’t Explain These Python Concepts, You’re Not a Real Developer.

Focus on problem-solving and sharpening basics when prepping for DSA interviews or LeetCode.
Advanced Python involves mindset upgrade rather than a checklist completion.
Companies utilize advanced Python concepts such as generators, decorators, magic methods, and metaclasses.
Decorators add custom behavior without altering core function logic, akin to upgrading a basic pizza.
Generators yield values one at a time, enhancing memory efficiency and performance.
Magic methods (dunder methods) like __init__, __str__, etc., are automated hooks in Python for specific events.
Metaclasses control how classes are created, with popular frameworks like Django leveraging metaclasses for ease.
Metaclasses provide power but necessitate caution to avoid complexity; simpler alternatives like decorators are advisable.
Master advanced Python tools after solidifying basics through practice, project building, and error handling.
Continuous learning is essential in Python programming due to the abundance of concepts waiting to be explored.

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Medium

287

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Diary of a Django learner #5 Debugging and dealing with errors

Errors in code can result in unexpected outcomes or raise exceptions.
Exceptions are runtime events that occur when errors or unexpected conditions happen.
Python has built-in exceptions and allows user-defined exceptions.
Django has its own exceptions that will be covered in this learning journey.
Setting DEBUG = True in Django project captures exceptions to aid in debugging.
In production, DEBUG should be set to False to avoid exposing sensitive information.
Custom error pages can be displayed in Django as well.
Creating intentional errors can help in understanding exception handling.
Using the debugger tool allows for line-by-line code inspection to identify errors.
Setting breakpoints in the debugger helps in validating variable values.
Debugging tools in IDEs can assist in the debugging process.
Errors can be located and understood through exception types and traceback.
Changing an intentional error back to correct code eliminates the error message.
Debugging helps in isolating faults and resolving issues faster.
Debugger allows for thorough variable inspection to identify problems.
Debugger can aid in narrowing down faults to specific lines of code.
Traceback in exceptions shows the line causing the issue.

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113

Understanding Delegates in Swift: Simple Object Communication

Delegates in Swift are used for one object to notify another about events or changes.
Delegates are implemented through protocols, enabling objects to call methods on their delegates.
Delegates facilitate object communication in iOS development and follow the delegation design pattern.
In the context of video game controllers and consoles, delegates allow notification of actions.
Delegates ensure communication between objects and help in writing cleaner and organized code.
Delegates help in creating reusable code and improve the structure of applications.
Creating a reference to a delegate should be marked as weak to avoid retain cycles.
A retain cycle occurs when two classes hold strong references to each other, leading to memory issues.
It is important to extend protocols with AnyObject to use weak references.
Weak references only work with class types because only class instances can be deallocated.
The delegate pattern is crucial for effective object communication in Swift applications.
Delegates contribute to writing more maintainable and scalable code in projects.
Delegates are essential in enabling communication and event handling in iOS development.
Delegates help in separating concerns and improving the architecture of applications.
Delegates are a key aspect of the delegation design pattern in Object-Oriented Programming.

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6 Likes

Medium

100

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The Temperature Trap: Why Your AI Keeps Giving the Same Wrong Answer

AI models often give wrong answers repeatedly due to incorrect temperature settings.
Temperature settings like 0.7 may not be suitable for non-creative tasks.
Temperature controls how sharply the model focuses on high-probability tokens.
Lower temperatures tend to deliver better ROI for most business applications.
Understanding token probabilities at different temperature settings is crucial for optimization.
Scenarios and solutions are provided for debugging temperature-related issues.
Use specific temperature ranges based on the task type for better results.
Temperature can amplify or suppress training biases in AI models.
An optimization checklist is provided for temperature settings.
Temperature optimization can significantly improve output quality and cost efficiency of AI systems.
Developers are encouraged to run temperature optimization frameworks on common prompt types.
Using temperature as a core optimization parameter can lead to better AI performance and reduced costs.

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Dev

356

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I'm 13 and I Built an AI PDF Reader

Adrián, a 13-year-old developer from Spain, created an open-source AI PDF Reader.
The AI PDF Reader allows users to upload a document and ask questions directly for quick information retrieval.
The application was built using Electron and React for cross-platform compatibility.
Adrián used Redux for state management, PDF.js for document rendering, and the OpenAI API for AI-driven features.
The project is primarily developed in JavaScript with HTML and CSS for the user interface.
The GitHub repository for the AI PDF Reader is available for community feedback and suggestions.
Adrián's goal is to reach 150 stars on the GitHub repository.
Adrián shared his journey in a blog post about how and why he built the AI PDF Reader.
The project links are provided below for further exploration.

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Alvinashcraft

121

Dew Drop – June 11, 2025 (#4437)

Microsoft teases Visual Studio subscriber discounts to VSLive! Dev Conference at Redmond HQ.
AI Toolkit for VS Code June update, Android 16 release, and .NET 10 Preview 5 availability.
Monitoring Duende IdentityServer License Usage with ASP.NET Core Health Checks.
SQL and NoSQL Query language support come to ReSharper!
Docker Desktop 4.42 release with Native IPv6 support and Better Model Packaging.
Windows App SDK 1.7.3 and 1.6.9 releases for WinUI, .NET MAUI & XAML.
Functional Programming Overview and Observability as a Developer Superpower.
New Code.org Curriculum aims to make schoolkids Python-literate and AI-ready.
Developer preview for Enhanced Android desktop experiences with connected displays.
Release Notes for SQL Server Management Studio (SSMS) v21.2.5 and SQL Server 2025 developments.

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7 Likes

Javacodegeeks

352

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[FREE EBOOKS] Solutions Architect’s Handbook, Continuous Testing, Quality, Security, and Feedback & Four More Best Selling Titles

The article features various free eBooks available for a limited time, covering topics such as solution architecture, continuous testing, AI, innovation, professional presence, SQL essentials, and modern business risks.
The 'Solutions Architect’s Handbook' provides insights beyond traditional certification guides and introduces new features like generative AI techniques.
'Continuous Testing, Quality, Security, and Feedback' addresses challenges in integrating testing, quality, and security into DevOps and provides strategies for successful digital transformations.
'AI and Innovation' offers frameworks from global leaders to transform organizations using generative AI and foresight thinking.
'Unforgettable Presence' focuses on building a powerful professional presence through virtual presence, impactful presentations, and leveraging LinkedIn.
'SQL Essentials For Dummies' is a quick reference guide covering key SQL programming topics without unnecessary explanations.
'Unruly' explores risks in modern business driven by politics, AI, and law convergence, providing advice on adapting to complex challenges.

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21 Likes

Dev

217

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🔥 3 Common Problems When Building a PDF Viewer in Vue.js (And How to Actually Fix Them)

Building a PDF viewer in Vue.js presents challenges in smooth PDF rendering, default toolbar functionality, and print preview reliability.
Smooth PDF rendering with virtual scroll in Vue projects can be problematic due to resource-heavy rendering, complex state management, UI issues, and memory leaks.
Virtual scroll for PDFs requires intelligent page preloading and memory management to ensure fluid scrolling and efficient canvas handling.
Customizing the PDF viewer toolbar is crucial for a user-friendly experience, including navigation controls, zoom options, search, print support, and download functionality.
Vue PDF Viewer provides a toolkit for toolbar customization, offering control over default functions, icon replacement, and event handling without altering core code.
Print preview functionality in Vue projects can be unreliable, leading to mismatches between on-screen viewing and printed output.
Print preview issues include incomplete rendering, UI elements on printouts, scrolling glitches, and complications when printing from dialogs.
Vue PDF Viewer addresses print preview challenges by isolating rendering for printing, handling dialogs effectively, and providing a reliable fallback strategy.
Vue PDF Viewer prioritizes print preview as a key feature, ensuring accurate, complete, and consistent print results for PDFs.
In conclusion, Vue PDF Viewer offers solutions to common PDF viewer challenges, ensuring smooth rendering, customizable toolbars, and reliable print preview functionality.
Vue PDF Viewer is a viable option for Vue.js projects requiring a production-ready PDF viewer with advanced features and robust support.

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13 Likes

Medium

235

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First one!

A recent college graduate shares their experience navigating the complex world of tech as a beginner.
The individual is uncertain about the concept of a 'full stack' in tech and the constant influx of new frameworks and technologies.
The motivation behind starting a blog is to document their learning journey and share real experiences, failures, and successes.
Navigating the choice of a 'tech stack' in tech is compared to choosing a Hogwarts house with various options available.
There is a lack of consensus on what defines a good technology or framework within the tech community.
The writer reflects on their attempt to learn Go programming language and the challenges faced.
Docker, a popular tool in tech, is mentioned in the context of tech stacks and choices.
The realization that everyone in tech is essentially 'winging it' is highlighted, indicating that mastering the art of searching for answers and being comfortable with not knowing everything is a key skill.
The blog is not focused on tutorials or hacks but rather on sharing personal experiences, struggles, and small victories in the journey of learning tech.
The writer points out that not knowing everything in tech is okay, and it is essential not to panic when faced with challenges.

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14 Likes

Dev

362

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🚀 Built a Serverless Image Optimizer with AWS Lambda + S3 (Free Tier Safe)

The project involves building a serverless image optimizer using AWS Lambda and S3.
The process includes uploading an image to S3, triggering Lambda to compress it, and displaying the optimized version.
The project is designed to be beginner-friendly, fully serverless, and cost-effective within the AWS Free Tier.
Key components of the tech stack include AWS Lambda, Amazon S3, IAM Roles, Pillow library, and Shell Scripts.
The project structure comprises Lambda code, deployment scripts, sample images, dependencies, and README.
Uploading an image to S3 triggers Lambda to compress it and save the optimized version as optimized-filename.jpg.
The project aims to be Free Tier compatible, avoiding unexpected AWS charges by utilizing simple setup and teardown scripts.
The target audience includes Cloud beginners, indie developers, DevOps learners, and freelancers interested in automation and AWS services.
Key learnings involve securely connecting Lambda to S3, optimizing Lambda deployment, IAM roles usage, and staying within the Free Tier limits.
The creator welcomes feedback, collaboration, and discussions related to serverless ideas.

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21 Likes

Dev

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Will AI Take Your Software Job?

The article discusses the impact of AI on software jobs and provides insight on overcoming the fear associated with it.
The author mentions using LLMs for tasks like ideation and prototyping but emphasizes the importance of fundamental skills over 'vibe coding'.
The author shares personal experiences to encourage readers to focus on real-world problem-solving and honing intuition.
Key points include the necessity of mastering one's craft, building tools that don't decay, and going beyond the 'noise' on platforms like Twitter.
Advice is given on how to improve skills, communicate effectively, and share work publicly in the tech industry.
The article highlights the importance of genuine content creation over superficial social media trends.

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3 Likes

Javacodegeeks

317

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How to Convert a String to SOAPMessage in Java

SOAPMessage class in javax.xml.soap package provides an abstraction for processing SOAP messages in Java applications.
Maven dependencies: jakarta.xml.soap-api for SOAP API interfaces and saaj-impl for SOAPMessage implementation.
Java program converts a raw SOAP XML string to a SOAPMessage object using MessageFactory and InputStream.
Conversion includes wrapping the XML string in an InputStream for MessageFactory.createMessage() method.
The process ensures proper character encoding with StandardCharsets.UTF_8.
Output after conversion is a well-formed SOAP envelope.
MessageFactory is crucial for creating SOAPMessage instances from different input sources.
The article explains the conversion process using Jakarta XML SOAP API and SAAJ implementation.
Explanation of how MessageFactory helps parse raw SOAP XML strings into SOAPMessage objects.
Overall, the focus is on converting a string into a structured SOAPMessage for further processing.

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19 Likes

Medium

3.7k

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The Personality Types That Always Get Promoted in Tech (And It’s Not About Code)

The traditional belief that the best programmers always get promoted in the tech industry is being challenged.
Informal interviews with 50+ tech professionals revealed a consistent pattern that defies the meritocratic notion.
Success in tech career progression is not solely dependent on coding skills or problem-solving abilities.
The article questions why individuals who excel technically may not always be the ones advancing to higher positions.

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25 Likes

Medium

1.8k

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I Explored the Vue.js Roadmap on onepin.io — Here’s What You Need to Know

Vue.js Roadmap on onepin.io is an interactive, visual learning path for learning Vue from basics to advanced concepts and best practices.
The roadmap is structured as clear, progressive nodes such as milestones, concepts, or recommended tools instead of text dumps or video playlists.
It is divided into phases that build on each other, providing a comprehensive guide for beginners and those looking to enhance their Vue.js skills.
For more information, you can visit the Vue.js Roadmap on onepin.io at: https://www.onepin.io/progress/Complete-Vue.js-Roadmap:-Beginner-to-Advanced-Guide-for-Building-Modern-Web-Applications-68383d77e95c725c951f8ac5

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