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DEV Community • 2026-04-23 08:21

Day 80 of #100DaysOfCode — Templates in Flask + Jinja2 Basics

Yesterday I covered routes, requests, and responses. Returning plain strings and JSON is fine for APIs, but for actual web pages, you need HTML, and writing HTML inside Python strings is a nightmare. Today, I covered Flask's templating system, which uses Jinja2, and learned how to serve static files. Coming from Django, this felt immediately familiar because Django's template language is also base...

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6m read
The Hidden Attack Surface of Modern Cloud Apps in the Age of AI
DEV Community • 2026-04-23 08:20

The Hidden Attack Surface of Modern Cloud Apps in the Age of AI

This is a submission for the Google Cloud NEXT Writing Challenge Building on the cloud has never been easier. With platforms like Google Cloud, developers can deploy scalable applications, integrate AI, and ship features faster than ever before. But beneath this convenience lies a growing problem. Speed and abstraction come at a cost: a rapidly expanding attack surface that few fully understand...

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8m read
Newest questions tagged javascript - Stack Overflow • 2026-04-23 08:18

How can I fetch high-resolution YouTube thumbnails using a video URL in JavaScript or PHP?

I am working on a web application where users can enter a YouTube video URL, and I need to extract the highest quality thumbnail image (HD or 4K if available). What is the best way to get YouTube thumbnail images using: JavaScript (frontend) PHP or Node.js (backend) Also, is there any official YouTube API method for getting different thumbnail resolutions? I want to ensure the image quality is...

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1m read
Product Hunt — The best new products, every day • 2026-04-23 08:15

Spira AI

AI Influencer that always on trend, create & grow your brand Discussion | Link

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1m read
Echo JS • 2026-04-23 08:13

A Powerful Node.JS CLI Time Tracker

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1m read
DEV Community • 2026-04-23 08:12

Graph Algorithms for Coding Interviews: When to Use BFS, DFS, or Dijkstra

Graphs are the most feared topic in coding interviews — not because they're impossible, but because most people learn BFS, DFS, and Dijkstra in isolation without understanding when to use each one. This guide gives you the decision framework that turns graph problems from guesswork into a systematic process. The three algorithms every interviewer expects you to know BFS — ...

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5m read
DEV Community • 2026-04-23 08:10

Port Exhaustion, Context Switching, and Why "HttpClientFactory" Exists (.NET)

Hello there!👋🧔‍♂️ When .NET apps call other HTTP APIs under load, production often teaches the same lesson in two different voices: cryptic socket errors such as “Only one usage of each socket address is normally permitted,” and slowdowns or instability that feel like “the network” but trace back to threads waiting on I/O the expensive way. The first story is mostly connection lifecycle (ports, po...

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10m read
DEV Community • 2026-04-23 08:10

Microtasks: Why Promises Run First

This is the third article in a series on how JavaScript actually runs. You can read the full series here or on my website. In the last article, we established that: JavaScript execution cannot be interrupted. Once a macrotask starts, nothing cuts in. Only after it completes does the runtime select the next macrotask from the queue. But consider this: setTimeout(() => console.log("t...

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6m read
Hacker News: Front Page • 2026-04-23 08:10

Email could have been X.400 times better

Article URL: https://buttondown.com/blog/x400-vs-smtp-email Comments URL: https://news.ycombinator.com/item?id=47873323 Points: 9 # Comments: 1

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1m read
Claude Design is Replacing Designers?
DEV Community • 2026-04-23 08:07

Claude Design is Replacing Designers?

Is Claude Design Really Laying Off Designers? divyesh vekariya divyesh vekariya ...

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1m read
Polymarket API for Developers: Data, CLOB, and Polygon RPС
DEV Community • 2026-04-23 08:07

Polymarket API for Developers: Data, CLOB, and Polygon RPС

TL;DR: Polymarket is a decentralized prediction market on Polygon where real-world events become tradable probability markets. The Polymarket API gives developers programmatic access to market data, trading infrastructure, and on-chain settlement — the foundation for trading bots, analytics dashboards, and prediction market interfaces. What is Polymarket? Polymarket is a non-custodia...

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4m read
Product Hunt — The best new products, every day • 2026-04-23 08:07

Onboarding0

Turn company knowledge into AI-guided onboarding Discussion | Link

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1m read
Apple Patches iOS Flaw That Stored Deleted Signal Notifications in FBI Forensic Case
The Hacker News • 2026-04-23 08:06

Apple Patches iOS Flaw That Stored Deleted Signal Notifications in FBI Forensic Case

Apple has rolled out a software fix for iOS and iPadOS to address a Notification Services flaw that stored notifications marked for deletion on the device. The vulnerability, tracked as CVE-2026-28950 (CVSS score: N/A), has been described as a logging issue that has been addressed with improved data redaction. "Notifications marked for deletion could be unexpectedly retained on the device,"

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DEV Community • 2026-04-23 08:05

Visual Testing with Playwright: The Complete Tutorial

Visual Testing with Playwright: The Complete Tutorial Since version 1.22, Microsoft's Playwright includes a native visual testing feature: the toHaveScreenshot() method. It captures screenshots and automatically compares them to reference images, with no external plugin needed. This is one of the strongest options for development teams wanting to add visual testing to their existing st...

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2m read
DEV Community • 2026-04-23 08:02

Google Just Made MCP Enterprise-Grade at Cloud NEXT '26 - Here's What That Means for Android Developers

This is a submission for the Google Cloud NEXT Writing Challenge Google Just Made MCP Enterprise-Grade at Cloud NEXT '26 — Here's What That Means for Android Developers Who Already Use It Google Cloud NEXT '26 dropped one announcement that most developer write-ups buried under the TPU 8 headlines and the $750M partner fund: Apigee MCP is now Generally Available. Any standard API can ...

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12m read
DEV Community • 2026-04-23 08:00

Is Claude Design Really Laying Off Designers?

The Truth Behind the 2026 AI Hype TL;DR: Anthropic's Claude Design crashed Figma's stock and broke the internet. But is it actually a designer-killer — or just the biggest AI hype trick of 2026? Here's the real story, no panic required. The Friday That Shook the Design World On a quiet Friday in April 2026, Anthropic pushed Claude Design live. By Monday morning, Figma's...

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8m read
HackerNoon • 2026-04-23 08:00

Why AI in Revenue Operations Fails Without Governed No-Code Architecture

Most RevOps AI fails not due to weak models, but poor architecture. When pricing, approvals, and contracts live in disconnected systems, AI produces unreliable outputs. Governed no-code platforms like DealHub solve this by unifying data and enforcing business rules in real time—turning AI from a risky recommendation layer into a reliable execution engine.

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1m read
DEV Community • 2026-04-23 08:00

The AI Agent Economy Needs Payment Rails — Here's What I Built

500K+ AI agent wallets exist on x402. Stripe launched machine payment protocols. Google announced AP2. The infrastructure for autonomous AI commerce is being built right now. I wanted to test the thesis: can you build a service that AI agents pay for, with zero human intermediaries? The Experiment I built a trading signal API. Agents call an endpoint, pay $0.005 in USDC on Base L2 via...

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1m read
DEV Community • 2026-04-23 08:00

Using Raspberry Pi 4, Raspberry Pi OS, and Docker to Connect Home Assistant with a Eufy IndoorCam 2K Pan & Tilt and Save Images When a Pet Is Detected

I wanted to connect an Anker Eufy IndoorCam 2K Pan & Tilt to Home Assistant and automatically save an image whenever my pet is detected. This article explains how to build that setup on a Raspberry Pi 4 running Raspberry Pi OS with Docker. I’ll start with the practical setup steps needed to get everything working, then summarize the common issues and questions that tend to come up along the ...

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8m read
TypeScript Complexity Has Finally Reached the Point of Total Absurdity
DEV Community • 2026-04-23 08:00

TypeScript Complexity Has Finally Reached the Point of Total Absurdity

At some point over the last few years, TypeScript stopped being a tool and started becoming a performance art. We went from: “Let’s add types so we catch bugs earlier” to: “Behold my 80-line conditional type that nobody understands, including me.” The worst part? This is not a niche problem anymore. If you work on modern web apps — Angular, React, Payload CMS, Nest, whatever — you have a...

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7m read
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