DEV Community • 2026-04-20 14:19

Go Templates Snippets for VSCode

I started learning how to use Go templates about a year ago and I found it arduous to stressful to type syntax like {{ block "name" pipeline }} in full, by hand, so I did what developers do - I built a VSCode extension to scratch my itch. I built Go Templates Snippets for VSCode, a VSCode extension that provides snippets for writing Go template syntax in .go, .gotmpl, .html and their file associa...

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Lobsters • 2026-04-20 14:18

Building an OPNsense router

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DEV Community • 2026-04-20 14:18

Python virtual environments: Inside .venv (Anatomy)

Python virtual environments (python -m venv) are not magic: they are a specific directory layout plus pyvenv.cfg that controls where Python imports and where pip installs. When installs land in the “wrong” place or imports behave inconsistently, the evidence is inside .venv/. This guide maps each folder and file (Scripts/bin, site-packages, .dist-info, pyvenv.cfg) to the behavior it drives, so yo...

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Visualize Function Call Graphs Interactively in VS Code — Call Graph Navi (Personal Project)
DEV Community • 2026-04-20 14:17

Visualize Function Call Graphs Interactively in VS Code — Call Graph Navi (Personal Project)

Introduction I built a VS Code extension that lets you interactively visualize function calls. It is not just a graph renderer; I focused especially on features that help you understand code structure efficiently. https://marketplace.visualstudio.com/items?itemName=D-grid375.call-graph-navi D-grid375 / call-graph-navi ...

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DEV Community • 2026-04-20 14:15

A Claude Code hook that warns you before calling a low-trust MCP server

Last week researchers at Ox published findings showing that the MCP STDIO transport lets arbitrary command execution slip through unchecked, and that 9 of 11 MCP marketplaces they tested were poisonable. Anthropic's response: STDIO is out of scope for protocol-level fixes, the ecosystem is responsible for operational trust. Fair — Anthropic donated MCP to the Linux Foundation's Agentic AI Foundat...

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HackerNoon • 2026-04-20 14:14

Meet Devtron: HackerNoon Company of the Week

HackerNoon features Devtron as the Company of the Week, highlighting its AI-native Kubernetes management platform designed to simplify complex workflows (the "Heroku for Kubernetes"). The post also showcases HackerNoon’s Business Blogging services, which help tech companies amplify their content through global distribution, SEO-friendly canonical links, and multi-channel reach to 4M+ monthly reade...

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Hacker News • 2026-04-20 14:13

Show HN: Self-hosted Raspberry Pi wall display (no cloud, no subscription)

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Hacker News • 2026-04-20 14:06

Show HN: fmsg – An open distributed messaging protocol

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DEV Community • 2026-04-20 14:05

Temporal.io: Stop Losing State When Your Server Crashes (Production Guide)

Background jobs are a solved problem until they aren't. A job starts, your server restarts during a deploy, and you're left with half-processed records and no way to resume. Temporal solves this by storing workflow state in a database and replaying from checkpoints. Here's how it works in practice. The Problem Temporal Solves // Without Temporal — fragile async function processOrde...

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Hacker News: Front Page • 2026-04-20 14:05

Qwen3.6-Max-Preview: Smarter, Sharper, Still Evolving

Article URL: https://qwen.ai/blog?id=qwen3.6-max-preview Comments URL: https://news.ycombinator.com/item?id=47834565 Points: 13 # Comments: 0

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DEV Community • 2026-04-20 14:05

Understanding Mixins in TypeScript: Concept and Examples

What Are Mixins in TypeScript? Mixins in TypeScript provide a way to reuse code across multiple classes without using traditional inheritance. A mixin is a class or function containing properties or methods that can be added to other classes, offering flexible code sharing beyond single inheritance. Why Use Mixins? Avoid duplication: Share common methods across different c...

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DEV Community • 2026-04-20 14:05

Reddit Research — Aggregate testing pain points from real user discussions ($200 pool)

Reddit 测试痛点研究报告 执行摘要 本报告基于对 Reddit 及相关技术论坛的深度调研，聚焦开发者和团队在测试工具、QA 流程和 CI/CD 实践中遇到的核心痛点。通过分析超过 150 个相关讨论帖，我们识别出五大高频痛点主题，并提供真实案例和数据支撑。 一、五大核心痛点主题 1. 不稳定测试（Flaky Tests）— 出现频率：68 个帖子 痛点描述： 不稳定测试是开发者最头疼的问题之一。测试用例在相同代码下时而通过、时而失败，导致 CI/CD 流水线频繁中断，团队对测试结果失去信任。 典型案例： r/programming 帖子："Our E2E tests fail randomly 30% of the time" (472 upvotes) 用户抱怨 Seleni...

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DEV Community • 2026-04-20 14:05

Resend + React Email: The Transactional Email Stack That Doesn't Fight You

SendGrid's free tier is 100 emails/day and the dashboard is from 2013. Mailgun's API is fine but the React SDK is an afterthought. Resend was built by developers who wanted something that worked like a modern API — here's the setup that's been running in production for 8 months. Why Resend Three reasons: the React SDK is first-party, the API is clean, and the free tier is 3,000 emails/...

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DEV Community • 2026-04-20 14:03

9 Verified Tools to Stop Burning Claude Tokens Unnecessarily

You're not using Claude more — you're just wasting more context. I went looking for real, working tools after seeing a widely-shared list that mixed legitimate repos with hallucinated ones. This article only covers tools I could verify on GitHub, organized by the type of waste they fix. Why tokens disappear faster than you expect Before the tools: understanding where tokens actuall...

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Gemini CLI vs Claude Code: Which to Choose for Python Tasks
Real Python • 2026-04-20 14:00

Gemini CLI vs Claude Code: Which to Choose for Python Tasks

Gemini CLI vs Claude Code: compare setup, performance, code quality, and cost to find the right Python AI coding tool for your workflow.

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DEV Community • 2026-04-20 14:00

Stop Giving AI Agents AWS Credentials: A Better Way to Secure Access

👋 Hey there, tech enthusiasts! I'm Sarvar, a Cloud Architect with a passion for transforming complex technological challenges into elegant solutions. With extensive experience spanning Cloud Operations (AWS & Azure), Data Operations, Analytics, DevOps, and Generative AI, I've had the privilege of architecting solutions for global enterprises that drive real business impact. Through this arti...

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DEV Community • 2026-04-20 14:00

How to Add Memory and Payments to Your AI Agent in 5 Minutes

Your AI agent can think. It can reason. It can call APIs and make decisions. But ask it what happened in the last session and it draws a blank. Ask it to hold money in escrow and it has no idea what you mean. I ran into this on every agent project I built. So I made an SDK that fixes both problems at once. Install npm install @mnemopay/sdk Step 1: Give Your Agent Me...

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DEV Community • 2026-04-20 14:00

How to Make Your Site Show Up in ChatGPT Search Results

Somebody on our team asked a question in ChatGPT the other day about a topic where we literally wrote the definitive guide. Our competitor showed up as a citation. We did not. That was a bad morning. So i spent the next two weeks figuring out how ChatGPT search actually decides what to cite. And honestly the whole thing is way less mysterious than people make it out to be. But almost nobody is o...

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Stop cross-file drift with Google's IfChange/ThenChange comments
DEV Community • 2026-04-20 14:00

Stop cross-file drift with Google's IfChange/ThenChange comments

Before I start pitching you anything, let me do what any good salesperson would do: let's get personal. If you have a terminal and a repo you know handy, run this: git grep -iE 'keep.* in sync|stays? in sync|also update|must (also )?be updated' The number you get back is what this whole post is about. Reading on your phone? See what a similar search turns up in the Linux kernel and/or R...

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DEV Community • 2026-04-20 13:57

Your AI Agent Just Spent $3,000. Nobody Told It to Stop.

Limenex is an open-source, deterministic stateful governance layer for AI agents and agentic systems. Agentic AI has been the talk of the town. In January 2026, OpenClaw went from zero to 180,000 GitHub stars in two weeks --- the fastest-adopted AI agent in history. It can manage your email, handle payments through Stripe, operate on your filesystem, and take autonomous actions across your dig...

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