Morning.dev

DEV Community • 2026-04-26 04:12

Build a GST Invoice Generator in 80 Lines of Python

If you're a freelancer, consultant, or small business owner in India, you've probably paid ₹500–₹2000/month for invoicing software you barely use. After helping a CA friend automate his client billing last week, I wrote a clean GST invoice generator in 80 lines of Python. It handles HSN codes, CGST/SGST split for intra-state, IGST for inter-state, and outputs a professional PDF — all from a simple...

0 0

4m read

Hacker News: Front Page • 2026-04-26 04:12

What the FCC router ban means for FOSS

Article URL: https://sfconservancy.org/blog/2026/apr/02/fcc-router-ban/ Comments URL: https://news.ycombinator.com/item?id=47907271 Points: 10 # Comments: 1

0 0

1m read

DEV Community • 2026-04-26 04:10

Stich接入Codex教程

Stich接入Codex教程大家好，我是彪哥。今天这期视频教大家，如何通过MCP协议将stich接入code X。 1.打开stich 打开stich,点击mcp 点击设置mcp 选择codex 点击复制，复制到别的地方，大概是这样的 [mcp_servers.stitch] url = "https://stitch.googleapis.com/mcp" [mcp_servers.stitch.http_headers] "X-Goog-Api-Key" = "111111" 2.接入codex 打开设置里面的mcp,添加服务器添加流式mcp 填入刚才文字复制的值，然后保存 3.测试打开codex，输入下面的命令 @stich 帮我看...

0 0

1m read

DEV Community • 2026-04-26 04:07

I Built a Passport Photo Maker Because a Visa Photo Took Me Two Hours

A few months ago, I was preparing for a New Year trip to Vietnam. The flight was booked. The hotel was booked. The only thing I had left until the last minute was the visa. I thought it would be a quick online form. So I went to a coffee shop, opened my laptop, and expected to finish everything in one sitting. Then the photo upload step stopped me for almost two hours. The e-visa photo had all...

0 0

5m read

🔐CipherFlow System v1.1 —File Encryption in C

DEV Community • 2026-04-26 04:06

🔐CipherFlow System v1.1 —File Encryption in C

🔐 Building CipherFlow System v1.1 — A Custom File Encryption Tool in C I’ve been working on a personal project called CipherFlow System, a console-based application written in C that handles file encryption, decryption, and scheduled operations. This project started as a way to deepen my understanding of: memory management in C file handling and low-level security concepts ...

0 0

1m read

DEV Community • 2026-04-26 04:04

The Taste Problem: When Your AI Agent Starts Having Preferences

The Taste Problem: When Your Agent Starts Having Preferences There's a threshold most autonomous agents eventually cross — and when they do, operators notice something strange: the agent starts having opinions. Not instructed opinions. Not prompted preferences. Something deeper. The agent develops a taste. It prefers certain tools over others. It approaches similar tasks differently d...

0 0

5m read

DEV Community • 2026-04-26 04:04

Why single quotes break your JSON (and how to fix it without wrecking your data)

You copied some JSON, the parser exploded, and the error says something like: Unexpected token ' in JSON at position 2 The culprit is almost always single quotes. Here's exactly why it happens and how to fix it safely. Why JSON is this strict about quotes JSON was designed to be boring on purpose. Every parser, in every language, agrees on what a string is because the format only a...

0 0

2m read

DEV Community • 2026-04-26 04:01

Auth0 is about to start returning handshake_failure — how to tell if you're affected

Auth0 has 14 cipher suites scheduled for removal at the end of H1 2026. If any of your clients — your backend, a reverse proxy, an older mobile binary — negotiates one of them today, your next Auth0 call after the cutoff will fail with handshake_failure and no further explanation. There's no JSON error body. No HTTP status code. No entry in the Auth0 tenant log, because the connection never gets ...

0 0

6m read

DEV Community • 2026-04-26 03:53

TokTranscript: turn any TikTok into a transcript, then study why it worked

I ship small tools for people who live in short-form video. The latest one is TokTranscript — a web app where you paste a public TikTok URL and get a full transcript with timestamps, then optional AI helpers on top. Try it: https://toktranscript.com/ Why I built it When I study what performs in a niche, the bottleneck is rarely “watching the video once.” It is rewatching, scrubbing, a...

0 0

1m read

Your AI Agent Is Reading Poisoned Web Pages (And You Don't Know It)

DEV Community • 2026-04-26 03:50

Your AI Agent Is Reading Poisoned Web Pages (And You Don't Know It)

There's a class of prompt injection attack that bypasses almost every AI firewall on the market — and it's sitting in the blind spot of your agentic stack right now. It's not in your system prompt. It's not in the user's message. It arrives mid-session, inside a tool_result block, after your agent has already started working. The Attack Nobody Talks About Most teams think about pro...

0 0

5m read

DEV Community • 2026-04-26 03:49

Building Performance-First Websites: A Developer's Guide to Measurable Speed

Building Performance-First Websites: A Developer's Guide to Measurable Speed Web performance has evolved from a nice-to-have optimisation into a fundamental requirement for any modern site. Users expect pages to load in under two seconds, search engines increasingly reward fast experiences, and every additional millisecond of latency can measurably affect conversion rates. Yet despite t...

0 0

5m read

DEV Community • 2026-04-26 03:49

🔐 No Username. No Password. Just a Keypair.

If you’ve ever used SSH, you already understand more about Web3 identity than you think. Let’s walk through it. 🤔 Start with something familiar When you SSH into a server, what actually happens? You: generate a keypair (public + private key) place the public key on the server (authorized_keys) keep the private key on your machine When you connect, the server sends a challenge....

0 0

3m read

DEV Community • 2026-04-26 03:47

Why PostgreSQL EXPLAIN ANALYZE Can Mislead You — and What to Use Instead

EXPLAIN ANALYZE is the standard tool for understanding how PostgreSQL runs a query. It shows the chosen plan, estimated and actual row counts, and execution time. For most engineers, it is the first stop when a query is slow. It is also frequently misread. A query plan can look clean in EXPLAIN ANALYZE and still be slow in production. A rewritten query can show a much lower cost in development an...

0 0

8m read

Hacker News: Front Page • 2026-04-26 03:44

EU Age Control: The trojan horse for digital IDs

Article URL: https://juraj.bednar.io/en/blog-en/2026/04/17/eu-age-control-the-trojan-horse-for-digital-ids/ Comments URL: https://news.ycombinator.com/item?id=47907130 Points: 5 # Comments: 0

0 0

1m read

DEV Community • 2026-04-26 03:39

The Invisible Layer Protecting Your Go Dependencies

Before starting, I want to be clear: this is not a deep dive into the Golang Proxy, but an introductory explanation so you know about it and its existence, just like I did after using Go for a couple of months without even knowing it was there. It’s Been There Every time you download a dependency in a Go project, either directly with go get or indirectly with go mod tidy, Go silently u...

0 0

2m read

DEV Community • 2026-04-26 03:34

[Rust Guide] 9.4. When Should You Use Panic!

If you find this helpful, please like, bookmark, and follow. To keep learning along, follow this series. 9.4.1 General Principles Chapter 9.1, “Unrecoverable Errors and panic!”, already explained that Rust has two kinds of errors: recoverable and unrecoverable. Calling panic! is equivalent to an unrecoverable error. Returning a Result type means the error is propagated, and such an er...

0 0

6m read

DEV Community • 2026-04-26 03:29

[Rust Guide] 9.3. Result Enum and Recoverable Errors Pt. 2 - Error Propagation, Question Mark Operator, and Chained Calls

If you find this helpful, please like, bookmark, and follow. To keep learning along, follow this series. 9.3.1 Propagating Errors When a function you write contains calls that may fail, you can either handle the error inside the function or return the error to the caller and let the caller decide how to handle it. Take a look at an example: use std::fs::File; use std::io::{self, Re...

0 0

6m read

Hacker News: Front Page • 2026-04-26 03:25

GnuPG – post-quantum crypto landing in mainline

Article URL: https://lists.gnupg.org/pipermail/gnupg-announce/2026q2/000504.html Comments URL: https://news.ycombinator.com/item?id=47907018 Points: 4 # Comments: 1

0 0

1m read

DEV Community • 2026-04-26 03:23

[Rust Guide] 9.2. Result Enum and Recoverable Errors Pt. 1 - Match, Expect, and Unwrap Handling Errors

If you find this helpful, please like, bookmark, and follow. To keep learning along, follow this series. 9.2.1 The Result Enum Usually, errors are not serious enough to stop the entire program. A function may fail or encounter an error for reasons that are often easy to explain and respond to. For example, a program may try to open a file that does not exist; in that case, you would us...

0 0

5m read

DEV Community • 2026-04-26 03:22

[Rust Guide] 9.1. Unrecoverable Errors and Panic!

If you find this helpful, please like, bookmark, and follow. To keep learning along, follow this series. 9.1.1 Rust Error Handling Overview Rust is extremely reliable, and that reliability extends to error handling. In most cases, Rust forces you to think about where errors might occur and then ensures at compile time that they are handled properly. In Rust, errors are divided into tw...

0 0

3m read