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Build a Policy-Based Access System in Python

A developer shares the frustration of scattered permission checks in the API codebase, proposing a policy-based access system in Python to simplify implementation.
Requirements include the ability to compose different rules, easy integration into existing codebase, and ensuring fast rejection of queries.
Implementation involves decorators for applying access policies, policies for defining access rules, and the use of pre-execution and post-execution checks for efficient access control.
The policy-based access system addresses challenges like scattered permission logic, code duplication, resource-dependent access control, and enhances maintainability.

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Medium

395

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Seeing a Project Through as a Software Developer

Many software developers struggle to see through their full projects, often encountering issues like scope creep and shiny object syndrome.
Some developers, including the author, find it challenging to complete their projects, resulting in a long list of unfinished projects on platforms like GitHub.
Shiny object syndrome makes it tempting to abandon current projects in favor of new, exciting ideas, leading to unfinished work and a constant cycle of starting new projects.
Despite having ample time ahead, developers may feel a sense of urgency to create something better immediately, contributing to the difficulty of seeing a project through to completion.

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Dev

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From Zero to Arrays: Introducing My New Project

The new project 'Arliz' is a reimagining of the writer's previous work, focusing on arrays, reasoning, logic, identity, and zero.
Arliz aims to provide a foundational understanding by starting from the historical roots of data organization and computation, rather than jumping straight into code.
The book is structured into 8 parts, starting with philosophical and historical foundations, diving into mathematical fundamentals, data representation, computer architecture, and finally exploring arrays and beyond.
The approach of tracing the evolution of data structures from ancient counting methods to modern computation is intended to change the reader's perspective on arrays.
While the book is still a work in progress, the emphasis has been on planning the structure and flow before diving into content creation.
The writer seeks feedback on the approach, structure, the balance between historical context and technical content, and the evolving nature of the book.
Readers are encouraged to provide insights on the 'living book' concept, accessibility considerations, and whether the approach is ambitious and innovative or overly complex.
The project is open for collaboration and feedback, with the repository link provided for those interested in tracking its progress and contributing.
The writer seeks diverse perspectives on the project, from beginners to experienced developers, to ensure its relevance and effectiveness within the community.
Feedback on whether the historical-to-modern approach helps in understanding arrays, the logical progression of the book's structure, and the balance between context and technicality is welcomed.
The intention behind 'Arliz' is to offer a unique and comprehensive journey into the world of data structures, aiming to provide a deeper understanding of arrays and their significance.

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Medium

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Compare the 3 Best Agentic CLI Coding Tools

Agentic CLI coding tools like Aider, Claude Code, and Codex CLI provide a streamlined experience for developers to work with AI models directly in the command line interface.
CLI-based tools offer a more efficient way to interact with AI models compared to IDE-based agents like Cursor, enabling faster completion of tasks with minimal UI.
While both CLI and AI code editors have their benefits, CLI tools like Aider, Claude Code, and Codex CLI give developers raw and low-level access to AI models.
Consider the pricing and cost per session when using agentic coding tools, as platforms like Claude Code can be more expensive compared to open-source options like Aider and Codex CLI.
CLI-based agentic tools are versatile and suitable for various application areas, including engineering projects and research teams working on small or large code bases.
Aider, an open-source tool, provides developers with a simple installation process and support for both small and large code bases through the selection of preferred LLMs.
Claude Code, designed by Anthropic, offers powerful tools for agentic coding but comes with a closed-source nature, providing robust security features and integration with enterprise applications.
Codex CLI, an experimental coding agent, is fully open-source and allows collaboration with closed and open-source models, offering a lightweight and efficient coding experience.
When using CLI coding tools, developers should be aware of potential hidden costs related to token consumption and prompt interactions, which can vary depending on the tool and usage.
CLI tools like Aider, Claude Code, and Codex CLI provide developers with a direct way to work with AI models in the command line, offering potential for improved workflows and task automation.

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Mjtsai

387

WWDC 2025 Wish Lists

Developers have various wishes and suggestions for WWDC 2025, with a focus on improving Xcode's build status reporting and overall stability.
Ideas include adding AI features, Swift Assist, MCP server for Xcode, Project.swift file, and better support for Swift Package Manager.
Suggestions also cover opening up plugin development, streamlining Xcode by splitting functionalities, and establishing a remote device lab for testing.
Enhancements like multi-item drag-and-drop in SwiftUI List, improved macro builds, and better email notifications are desired.
Developers also advocate for changes in Siri, Xcode features, faster App Store downloads, and streamlined backup options.
Proposals include a profile picker in Safari, revamping Siri, native support for Electron/Chromium apps, and more developer-friendly announcements.
Suggested improvements for WWDC include increasing free iCloud storage, TestFlight review process, and enhancements to the Small Business Program.
Regarding the Small Business Program (SMP), developers highlight the need for automatic enrollment and a progressive fee structure to avoid app removal strategies.
Amidst the wishlist items, there are discussions on delayed approvals, the significance of automatic features, and community-led suggestions for WWDC improvements.
The ongoing wishlist threads and user input reflect a diverse range of hopes and expectations for WWDC 2025.

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Dev

180

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🚀 Mastering select_for_update() in Django: Prevent Race Conditions the Right Way

select_for_update() in Django helps prevent race conditions by locking database rows during a transaction.
It is useful for inventory systems, bank transfers, purchasing tickets, and preventing double submissions.
An example usage includes locking a product row during checkout to ensure stock consistency.
Advanced options like nowait=True and skip_locked=True offer further customization for locking behavior.

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10 Likes

Dev

246

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Why Developers Should Learn Linux (Even Just a Little)

Developers often overlook the importance of learning Linux, thinking it's only for backend or DevOps professionals.
Understanding Linux is crucial as most code eventually runs on Linux servers, containers, or cloud instances in production.
The terminal in Linux is a powerful tool, enabling developers to navigate logs, kill processes, and monitor system resources efficiently.
Knowledge of Linux is essential for debugging real bugs in production environments, handling services, reading logs, and dealing with permissions.

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Dev

132

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React Server Components: The Future of Full Stack React

React Server Components (RSCs) are revolutionizing the way we build React applications by enabling components to run on the server and fetch data directly from databases.
RSCs work alongside client components, offering a hybrid approach for interactive and server-side rendering.
The shift to RSCs eliminates the need for separate API endpoints, simplifies data fetching, and enhances performance.
RSCs and client components serve distinct purposes, with RSCs focusing on data fetching and initial rendering while client components handle interactivity.
Performance improvements with RSCs include faster loading times and reduced bundle sizes, making applications more efficient.
Considerations like 'use client' boundaries, serializable props, and environment variables need attention when working with RSCs.
Despite the learning curve, the simplified state management and automatic code splitting offered by RSCs enhance the developer experience.
RSCs are recommended for content-heavy apps, dashboards, e-commerce pages, and performance-sensitive cases, while they may not be ideal for highly interactive applications.
Starting with Next.js, experimenting with data fetching, and favoring a 'server-first' approach are suggested paths for utilizing RSCs effectively.
The future of React embraces both server and client components, signaling a shift towards a more balanced and optimized full-stack framework.

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Hackernoon

226

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Why Hackers ❤️ Your Expired Domains and Outdated JavaScript

Outdated third-party scripts on web applications can lead to data theft, fraud, and regulatory issues.
Abandoned domains connected to critical systems can still leak sensitive information and pose security risks.
Domain confusion, improper management of domains, and scripts can undermine brand trust and make phishing attacks easier.
Recent incidents like the Polyfill breach emphasize the importance of actively managing domains and scripts to prevent security breaches.

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13 Likes

Medium

246

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The Art of Overengineering a Calculator.

The article discusses the process of building a calculator by overengineering it using TypeScript and emphasizes on tokenization, abstract syntax tree (AST), and parsing logic.
The project utilizes a lexer to break down the input sequence into tokens, constructs an AST to represent nodes based on operator precedence, and defines a parsing logic following Extended Backus-Naur Form (EBNF).
The parsing logic implemented in the project recursively traverses the tree to apply mathematical operations and can be converted to a CLI for interactive use.
The journey into building the calculator delves into the concepts of compilers, starting from tokenization by the Lexer, hierarchy creation by the Parser, and evaluation by the Evaluator, providing a foundation for more complex problems in the future.

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14 Likes

Medium

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Installing VS Code (The Right Way)

Visual Studio Code is a popular and versatile IDE known for its lightweight and fast performance.
Installing VS Code is simple - download the app and move it to the Applications folder on Mac, or use the package manager on Linux.
No additional setup is required for VS Code to function properly after installation.
To enhance functionality, users can install extensions based on the programming language they are working with, such as JavaScript, HTML, or Go.

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3 Likes

Dev

330

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Scaffolding Elegance: Mastering `Microsoft.EntityFrameworkCore.Design` (v9.0.5) in ASP.NET Core Web API

Microsoft.EntityFrameworkCore.Design is a crucial tool in the Entity Framework Core ecosystem for scaffolding DbContext, entities, and migrations.
Version 9.0.5 of Microsoft.EntityFrameworkCore.Design is stable for use with both .NET 7 and .NET 8, introducing performance improvements for upcoming versions of EF Core 10 and .NET 9.
Steps to scaffold a real database into a Web API project involve adding Microsoft.EntityFrameworkCore.Design and Microsoft.EntityFrameworkCore.SqlServer packages, creating a DbContext, and defining entity classes.
Best practices include using -f to update scaffolding, customizing .csproj assets, separating authentication from business data with multiple contexts, and enabling nullable reference types for model correctness.

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Blockonomi

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XRP Eyes $2.30 Breakout as RippleNet Rumors Link Elon Musk to SWIFT Alternative

XRP is approaching a key resistance level at $2.30 amid growing support from institutional and retail markets.
Elon Musk may adopt RippleNet as the payment infrastructure for X Payments, potentially moving away from the SWIFT system.
XRP's legal battle with the SEC continues, with a key settlement update deadline set for June 16.
Positive trading indicators point to potential gains towards $3.00, with rising CVD and chart setups supporting the bullish outlook.

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5 Likes

Medium

325

✨ Enso: The Visual Programming Tool for Creators Who Think in Flow

Enso is a visual programming environment that caters to creative professionals, data scientists, and developers, enabling them to build complex data workflows and applications without the constraints of traditional code environments.
Enso's core concept revolves around flow-based programming, representing programs as a graph of connected operations, providing real-time data flow visualization and allowing instant feedback.
Shortcuts in Enso are powerful productivity tools that enable users to encapsulate and reuse logic segments, enhancing workflow efficiency by simplifying the creation of reusable functionality without repetitive rewiring.
Enso empowers users to seamlessly blend graphical blocks and textual code, offering an intuitive interface combined with features like Shortcuts to facilitate building modular, maintainable, and scalable logic for various projects.

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19 Likes

Dev

277

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React Testing Setup: Vitest + TypeScript + React Testing Library

Setting up a React app using Vite and TypeScript with Vitest and React Testing Library can be a bit tedious initially.
Steps include creating a new React + TypeScript project, adding Vitest, enabling global test functions, and adding React Testing Library.
Additional steps for fixing assertion errors and testing user events are provided in the guide.
The final summary includes commands for installing required packages and necessary updates for vite.config.ts, tsconfig.app.json, and src/tests/setup.ts.

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