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OpenAI o1 models 🤖, React 19 🎁, communicating tradeoffs 🗣

TLDR Web Dev <dan@tldrnewsletter.com>

September 13, 11:11 am

TLDR WebDev
OpenAI has released two new "chain-of-thought" models, o1-preview and o1-mini, which prioritize reasoning over speed and cost. 

TLDR

 TLDR Web Dev 2024-09-13

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Articles & Tutorials

What's new in React 19 (8 minute read)

React 19 introduces major updates like Server Components, improving performance by rendering on the server and reducing client-side JavaScript. New features include Actions for handling events and enhanced hooks like useActionState for managing form states, streamlining both server and client workflows.
The Undeniable Utility Of CSS :has (17 minute read)

The CSS :has pseudo-class provides a new way to style elements based on their relationships to other elements in the DOM. It is a powerful tool for creating more complex and dynamic CSS styles. However, it is important to consider browser support and the complexity of your use case before using :has.
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Opinions & Advice

Notes on OpenAI's new o1 chain-of-thought models (9 minute read)

OpenAI has released two new "chain-of-thought" models, o1-preview and o1-mini, which prioritize reasoning over speed and cost. These models are trained to think step-by-step, enabling them to handle more complex prompts requiring backtracking and deeper analysis. While the reasoning process is hidden from users due to safety and competitive advantage concerns, it allows for improved results in tasks like generating Bash scripts, solving crossword puzzles, and validating data.
How to communicate tradeoffs so leaders will listen (6 minute read)

It's important to consistently communicate team priorities and frame tradeoffs clearly when handling high-priority requests from leadership. The "steelmanning" technique, which involves thoroughly understanding and presenting the strongest case for new requests to make more informed decisions, can also be useful.
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Launches & Tools

[Free Workshop] Defeating the final boss of endpoints (Sponsor)

Imagine an endpoint that involves a long series of HTTP calls, file I/O, third-party calls (AI generation), and finally a couple of DB queries. Where do you even start debugging performance issues?! In this workshop, you'll learn how developer and podcaster Dan Mindru shaved off 22.3 seconds per call with Sentry Trace View. Join live with Dan
Redirect Checker (Website)

URL redirects are a way to send users and search engines from one URL to another. This website provides tools to analyze your redirects like detailed path analysis, bulk redirect checking, and more.
Legend Motion (GitHub Repo)

Legend Motion is a declarative animations library for React Native that makes it easy to transition between styles without needing to manage animations.
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Miscellaneous

Learning to Reason with LLMs (16 minute read)

OpenAI o1 is a new large language model trained to reason by generating a chain of thought before responding. This model demonstrates significant advancements in reasoning capabilities, achieving impressive performance in various tasks, including competitive programming, math Olympiads, and scientific problem-solving. OpenAI o1-preview is now available for use in ChatGPT and through the API, allowing users to explore its reasoning abilities.
An unpopular perspective on the SSO tax (13 minute read)

The so-called "SSO Tax" in SaaS pricing is not an unfair practice but rather a form of price discrimination that is both logical and beneficial for both vendors and customers. Price discrimination is inherent in any market, as buyers have different preferences and willingness to pay. Vendors need to segment their customers to maximize their revenue. For example, airlines have different pricing tiers that allow vendors to offer more affordable basic tiers while still catering to the needs of high-paying customers.

Quick Links

Does Your Startup Really Need Complex Cloud Infrastructure? (4 minute read)

Startups often overcomplicate their cloud infrastructure, neglecting product-market fit in favor of complex deployments
We Spent $20 To Achieve RCE And Accidentally Became The Admins Of .MOBI (8 minute read)

These researchers inadvertently became the admins of the .MOBI TLD after registering an expired domain, which allowed them to undermine the CA process for the entire .mobi TLD.
Understanding Concurrency, Parallelism, and JS (9 minute read)

This article explains the difference between concurrency and parallelism, how they are implemented in JavaScript, and the potential pitfalls of using them in Node.js.

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Thanks for reading,
Priyam Mohanty, Jenny Xu & Ceora Ford


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