Matt Hamlin

@matthamlin.me

514 Followers 2088 Following

Software engineer at HubSpot, also working on way too many side projects. Co-host of @bikeshedpod.com 🎙️ https://matthamlin.me

pub fn try_map<F, R> ( self, f: F ) → <R as Try>: :Residual as Residual<[<R as Try>:: Output; N]>>:: TryType where source F: FnMut (T) →> R, R: Try, Try>: : Output; N]>, <R as Try>:: Residual: Residual< [<R as
Screenshot of an incorrect answer in the jsdate.wtf quiz, the question was: `new Date("maybe 1")` and the correct answer was `2001-04-30T23:00:00.000Z` but I responded with `2001-05-01T00:00:00.000Z`.
Screenshot of the following bash code: if (cond) fi case esac
Tooltip showing above a link titled "Async Class Creation in JavaScript" with the contents of: Async Class Creation in JavaScript Published: Jun 3, 2025, 4:04:58 PM EDT Have you ever wanted to create a class in JavaScript or TypeScript but also have the initialization be async? Here's a quick tip on a pattern that I've used in the past!
Photo of the Call of Duty xbox launch screen showing game stats with 97 days 8 hours and 17 minutes of play time
A cartoon comic with two stick figures having a sword fight on rolling office chairs, with a doorway open to an office in the background with the following content: Title: The #1 programmer excuse for legitimately slacking off: ChatGPT is Down Dialog: From the office: "Hey! Get back to Work!" From one of the stick figures fighting: "ChatGPT is Down" From the office: "Oh. Carry on."
Sceeenshot of the iOS phone like lock screen, showing Discord Audio General channel, with icon buttons at the bottom of the screen
Screenshot of an article with part of the content highlighted: Outside of YC, Pukar Hamal, CEO of SecurityPal — which helps companies automate responses to security-related questions during the sales process — is vibe coding agents to fill some open positions rather than hiring personnel. START highlight: SecurityPal needed a product manager, and instead of creating a job posting, Hamal spent three hours vibe coding an agent named Penelope, depicted as a brunette mountaineer wearing aviator goggles and a fur-lined bomber jacket (a nod to the company’s office in Nepal). “Penelope is going to be a very integral part of how I as a CEO make decisions,” he told Semafor. “She’s also going to be part of my leadership meetings, where we can interrogate her on different ideas we have.” END highlight SecurityPal has incorporated two vibe-coded agents into the security analyst team, which manages security data sharing between customers. The company onboarded them like it would any employee, and they participate in all-hands meetings — camera on. “We’ve probably already hired our last security analyst,” he said.
Screenshot of an iPhone activity from the dynamic island showing an activity with one side saying “50% off” and the other side showing a countdown timer at 9 minutes and 45 seconds remaining, the text is in a bright bold red color
A screenshot of the title of a merged GitHub pull request titled "Delete edge functions" Content of the screenshot was lightly edited for brevity (author changed)
A list of blog post titles / concepts in my notes: Design By Committee Doesn’t Work Demo Driven Development DIY - Deploy It Yourself Software Green Pastures Keep a Messy Desk Managing Monorepos Monorepo Guidebook My Motivations Ownership Hot Potato Principles for Maintaining Great Applications Separating Deploys From Releases Supporting Multiple Release Environments Technical Artifacts What To Do When Everything is on Fire Adopting Next.js App Router An Organization as the Ship of Theseus Belgium and Amsterdam Trip 2023 Career Development Template Test Driven Refactors Pull Request Etiquette Early Feedback, Late Stoppage False Confidence Keys for Developing Software Quickly (and Safely) Live Code Reviews London 2023 Trip Maintaining A Library, Well Navigating Turborepo Monorepos with Ease On Engineering Career Ladders Open Sourcing a Design System Isn’t Possible Sail or Parachute? The Risks of Auto-Mocked E2E Testing The Risks of E2E Testing Thin Clients Using Cypress and Jambox to Create a Sturdy Integration Testing Framework What to Ask During an Interview Avoid Compound APIs Benchmarks and Leaderboards Don't Win Customers How to Write the Perfect Issue Tips and Tricks for TypeScript Projects Isomorphic Cookie API for Next.js Middleware Custom Catch-All OG Images for Next Building a Web Sandbox Part 2 Code Spelunking To Remain On Stack Or Not Supporting Auth in Preview Deploys Draft Driven Development It Depends Considered Harmful snippet - Progressively Enhanced Identifiers Side Quests Onboarding Your New AI Teammate You Should Be Everything-Maxxing On Dependency Management In Review - The Belroy Transit Workpack Pro v2 Website Redesign v10
A line diff counter view on a GitHub PR, showing an addition of 183 lines, and removal of 2684 lines of code
A rounded pill-like navbar with an active link for Home, and inactive links for Blog, Projects, Bookshelf, and About
xAI post on twitter: We want to update you on an incident that happened with our Grok response bot on X yesterday. What happened: On May 14 at approximately 3:15 AM PST, an unauthorized modification was made to the Grok response bot's prompt on X. This change, which directed Grok to provide a specific response on a political topic, violated xAl's internal policies and core values. We have conducted a thorough investigation and are implementing measures to enhance Grok's transparency and reliability. What we're going to do next: - Starting now, we are publishing our Grok system prompts openly on GitHub. The public will be able to review them and give feedback to every prompt change that we make to Grok. We hope this can help strengthen your trust in Grok as a truth-seeking Al. - Our existing code review process for prompt changes was circumvented in this incident. We will put in place additional checks and measures to ensure that xAl employees can't modify the prompt without review. - We're putting in place a 24/7 monitoring team to respond to incidents with Grok's answers that are not caught by automated systems, so we can respond faster if all other measures fail.
let id = useId().replace(/:/g, "-");
Notifications in Todoist, notifying me when i reached specific levels in their Karma scale. Top notification was from 1 minute ago saying I reached the Professional level, second notification was from 47 weeks ago saying I reached the Intermediate level, and the last notification was from 453 weeks ago saying that I was a Todoist Novice
Screenshot of the dropdown menu in the Todoist app, showing a orange indicator dot on the avatar matching the same orange color used for the CTA to upgrade to the pro plan shown in the dropdown
A brick sidewalk covered in small white petals, with flower boxes between the building and the street with many different blooming vibrant flowers
A street and sidewalk heading up a hill, with a few trees just starting to get their leaves, buildings on either side of the street with a blue sky in the background
Screenshot of the Bikeshed Pod episode details page, showing the following: "Spicy Takes: Tune in to hear the takes that Dillon and Matt share to make Scott react like Mr. Krabs" With an image of Mr. Krabs from Spongebob with a dizzying effect around him.
Screenshot of a clipped email message, with some text using the Comic Sans font
Screenshot of the song "party 4 u" by Charli xcx off of the album "how i'm feeling now" in YouTube Music
Two brick layers building a wall, the bricks are all askew and at different angles
Screenshot of an email from Dropbox announcing that Dropbox Capture will be discontinued on March 24th 2025
A message from someone else in iMessage saying “Where are we on the podcast website?” and my reply saying “i’ll get to work on it”
Screenshot from a section of the quote post’s linked article, stating: “Are Enums and Namespaces Supported? Enums and Namespaces are not supported by default.” And notes that you may need an additional flag still to support those features: “—experimental-transform-types”
Screenshot of the Croissant app from an iPhone, showing the composer view
A meme containing the following content: The 90/20 rule: Try working at a ratio of 90:20. 90-minutes of work before taking a 20-hour gaming break. This will create a “Fun Cycle” where you do lots of gaming, and leave a full 2.5hrs for “extras” like sleep, wife or children.
A heading with the following content "You're giving feedback on a new version of ChatGPT." followed by two separate responses shown side by side
Screenshot of my site footer showing a Bluesky link and a GitHub link
Two glasses of beer on a table in a pub
Screenshot of my previous post in the feed, with various labels applied to my post that takes up a decent amount of screen real estate
A screenshot of the App Limits/Screen Time settings view in iOS, enabling a 1 minute limit for the X app (Twitter)
A code comment with the following contents: "@TODO - this is a bit of a hack - ideally we'd center align the text in each chunk however this code just evenly distributes the letters within a chunk across the width of the container I need to look into that but I'm out of my v0 messages for the day 🥲"
A hand holding an “I Voted” sticker
Screenshot of a row within a table containing the following information: Vercel Projects Connected per Git Repository: - Hobby Plan: 3 - Pro Plan: 60 - Enterprise Plan: Custom