The hottest Development Substack posts right now

And their main takeaways
Category
Top Technology Topics

Good Docs Describe, Bad Docs Prescribe

Rethinking Software • 299 implied HN points • 25 Jul 25
🕹 Technology Development
  1. Good documentation should describe the current state of the software, not what it might be in the future. This keeps it relevant and useful.
  2. Documents like ADRs and RFCs can become roadblocks if they're written too early. They can hold teams back instead of helping them move forward.
  3. The best documentation comes from the code itself, such as generated docs or inline comments. This helps ensure that the documentation matches the actual software.

Huawei Founder on US v China and Basic Research

ChinaTalk • 415 implied HN points • 11 Jun 25
🕹 Technology Development
  1. Basic research is crucial for long-term success. Without it, countries can't make significant advancements and keep up with other leading nations.
  2. There are many challenges in the tech industry, but rather than focusing on the negative, it's important to keep moving forward and adapt. China is making progress through collaboration among its numerous chip companies.
  3. Support for theoretical scientists and researchers is essential. Their work, though often misunderstood and slow to show results, is key to the future development and innovation of the country.

The beautiful theory of TDD and the reality check of practice

Bite code! • 2568 implied HN points • 04 Feb 24
🕹 Technology Development
  1. TDD can make your code more flexible, reliable, and less error-prone by focusing on testing upfront.
  2. TDD may not work well for everyone, as it requires experience, ability to hold complex models in mind, and sustained focus.
  3. Not all projects are suited for TDD, and it's important to assess the cost and benefit of testing based on project needs and constraints.

Survival, Cash Flow, & Options

Software Design: Tidy First? • 331 implied HN points • 11 Jul 25
🕹 Technology Development
  1. Sometimes the best design choice is not to design anything at all. It's important to know when to hold back on creating features.
  2. Understanding the trade between features and options can help in making better decisions in software development. Prioritizing options can lead to long-term benefits.
  3. Reading insightful books like 'Ergodicity' can shift your perspective on important concepts in software and economics. Gaining new insights can help you better navigate complex problems.

Developing with Kiro: Amazon's New Agentic IDE

Rain Clouds • 311 implied HN points • 14 Jul 25
🕹 Technology Development
  1. Kiro is a new IDE that can improve productivity by letting you focus on high-level planning instead of writing code. You describe what you want, and Kiro helps execute the project.
  2. Using Kiro requires creating clear specifications and being detailed in your instructions for it to work effectively. The better you articulate your needs, the better the results you'll get.
  3. Kiro is not perfect and has its limitations. It's key to know when to let it run on its own and when to step in and help it with specific problems or decisions.
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Vignettes: War

Myth Pilot • 628 implied HN points • 27 Mar 23
📚 Literature Development
  1. The author aims to publish more content regularly, mixing fiction and non-fiction.
  2. The author plans to share short little posts and vignettes to engage readers and improve writing practice.
  3. The vignette shared is a mix of fact and fiction about a soldier's experience with a State Department official in Iraq.

The World Bank African Countries Need

An Africanist Perspective • 613 implied HN points • 01 Mar 23
🌍 World Politics Development
  1. Low-income countries need the World Bank to focus on their real concerns to ensure program success.
  2. It's crucial for the World Bank to prioritize faster project implementation to avoid delays that disrupt policy planning and implementation in low-income countries.
  3. African countries should advocate for a World Bank that embraces big and transformative ideas, conducts better policy research, and improves data collection to accurately address the region's needs.

Chartbook 330: Africa & absolute poverty in an era of polycrisis.

Chartbook • 1072 implied HN points • 27 Oct 24
🇺🇸 U.S. Politics Development
  1. Absolute poverty remains a huge issue, especially in Africa, where many people live on very little daily. Despite some progress in reducing poverty in the past, the fight has stalled recently due to several overlapping crises.
  2. Sub-Saharan Africa faces significant challenges, with extreme poverty still on the rise, while other regions like Asia have seen a decline. Many poorer countries have not improved economically, which is concerning.
  3. Stability is crucial for reducing poverty. Countries free from conflict and instability tend to see better economic growth, while those suffering from political issues struggle to escape poverty.

What the Hell Am I Doing Here?

Meanwhile, on the other side of my brain... • 99 implied HN points • 27 May 24
🕹 Technology Development
  1. The author faced a challenging recovery period after a car accident, including cognitive issues that persisted for months.
  2. Despite challenges, the author is enthusiastic about returning to writing, programming, and sharing knowledge on game development and tools.
  3. The author plans to expand the newsletter's topics, including sharing stories, project updates, and insights, and to create more video content.

Pytest is All You Need

LLMs for Engineers • 79 implied HN points • 12 Jun 24
🕹 Technology Development
  1. Pytest is a great tool for evaluating LLM applications, making it easier to set up tests and check their performance. It allows you to program your own evaluation metrics directly in Python without needing complicated configurations.
  2. You can easily collect and analyze data from multiple test runs using Pytest. This helps to understand how consistent the outputs are across different evaluations.
  3. The examples show how to compare different prompts and LLM models, enhancing the flexibility and variety in testing. This allows you to see which setups work best in various scenarios.

Different Bests in Different Contexts

Software Design: Tidy First? • 861 implied HN points • 20 Dec 24
🕹 Technology Development
  1. Different tasks require different strategies. What works for one situation might not work for another, so it's good to be flexible.
  2. In a project, you might focus on playing around with ideas, then expanding and finally getting results. Each stage has its own challenges and goals.
  3. Understanding the different phases of a project can help guide how you work. It helps avoid mistakes and ensures the right approach for each part.

My Top 15 OS Books: From Theory and Implementation to Systems Programming

Confessions of a Code Addict • 673 implied HN points • 18 Feb 25
🕹 Technology Development
  1. Understanding operating systems is really important for software engineers. It helps you know how your code runs and can make fixing problems easier.
  2. There are different types of books to learn about operating systems: theory books, implementation books, and systems programming books. Each type helps you at different stages of your programming journey.
  3. Some popular OS books, like 'Operating Systems: Three Easy Pieces', are easy to understand and cover key concepts without sticking to just one system. These resources are great for anyone wanting to learn about OS.

GPT5 and the end of naive AI futurism

The Future, Now and Then • 229 implied HN points • 15 Aug 25
🕹 Technology Development
  1. The release of GPT5 shows that the rapid advancements in AI may not be as groundbreaking as some expect. Instead of huge leaps, we see steady improvements over previous models.
  2. People are starting to think more about what AI can actually do today, rather than getting swept up in promises of radical future changes. This shift is important for evaluating AI's real impact.
  3. The excitement around AI technology might be fading, as the narrative of exponential growth and transformation is now harder to sell. Investors may start to focus on actual performance instead of potential.

My son-in-law's job is safe

In My Tribe • 349 implied HN points • 06 Jun 25
🕹 Technology Development
  1. Software architecture is important for maintaining clean code. It's better to separate data and logic to avoid complications later.
  2. AI can quickly generate code, but it still needs guidance on architectural decisions.
  3. Working on the project is a balance between exploring new technology and refining the foundational structure.

Origins Season 12 Preseason is LIVE!

The Lunacian • 736 implied HN points • 22 Jan 25
🕹 Technology Development
  1. The Dream World Arcade Mode is now live, replacing the Haunted House tickets with Dream World tickets while keeping the same gameplay.
  2. Players can test new Runes and Charms for free before the official season starts, allowing them to prepare better for the competition.
  3. Delegatees will soon have the ability to morph their Axies using their own resources, and a new Axie Check-In feature will reward players based on their chosen Axie's tier.

RunLLM: The custom assistant for developer tools

The AI Frontier • 179 implied HN points • 28 Mar 24
🕹 Technology Development
  1. RunLLM is a special AI assistant designed for developers, helping them with coding, answering questions, and fixing bugs. It uses specific training to understand a developer's tools and needs better than general assistants.
  2. The way RunLLM works allows it to provide accurate and relevant information quickly. It does this by fine-tuning its learning based on user feedback and the specific data it needs to use.
  3. Setting up RunLLM is easy and can be done through various platforms like Slack and Discord. Developers can quickly start using it to improve their workflow.

Management Section Intro: Tidy Together Chapter

Software Design: Tidy First? • 243 implied HN points • 18 Jul 25
🕹 Technology Development
  1. Tidyings are small design changes you can make on your own. It's important to find a good rhythm for when to start and stop these changes.
  2. The next step in design management is more complex than just tidying up. It involves big refactoring challenges that need teamwork.
  3. Managing tidying design changes can improve overall software quality, but it requires balancing between making improvements and delivering new features.

An illustration of the high cost of low state (fiscal) capacity in Liberia

An Africanist Perspective • 494 implied HN points • 28 Apr 23
🌍 World Politics Development
  1. The high cost of low state capacity in Liberia impacts public services and infrastructure, highlighting the need for economic growth over only focusing on governance and corruption.
  2. Poverty in Liberia severely limits the government's fiscal capacity, affecting its ability to provide public goods and services. The country's annual budget per capita is significantly lower than other regions, making it challenging to maintain essential services.
  3. The US Ambassador to Liberia pointed out significant mismanagement of funds in critical sectors like healthcare and education. This points to a need for better spending of allocated funds and an improvement in service delivery to benefit the citizens.

The Sports Economy Is More Than Stadiums

The New Urban Order • 139 implied HN points • 10 Apr 24
🎾 Sports Development
  1. The sports economy involves more than just building stadiums, with a focus on combining sports with other economic activities like housing and retail to create sustainable developments.
  2. There is increasing skepticism about the economic benefits of public subsidies for stadiums, with citizens and governments becoming more cautious about investing in such projects.
  3. The concept of 'stadium neighborhoods' is evolving, with a shift towards creating more holistic developments that offer amenities beyond just sports entertainment, emphasizing urban recreation and community needs.

The Time Profiler

Jacob’s Tech Tavern • 656 implied HN points • 07 Jan 25
🕹 Technology Development
  1. The Time Profiler is an essential tool for improving iOS app performance. It helps find and fix slow parts of your code.
  2. It can identify specific issues like animation delays or overheating in your app. This makes it easier to solve performance problems.
  3. Learning how to use the Time Profiler effectively can lead to faster, smoother apps that users will enjoy more.

Context Switching and Performance: What Every Developer Should Know

Confessions of a Code Addict • 721 implied HN points • 12 Dec 24
🕹 Technology Development
  1. Context switching happens when a computer's operating system manages multiple tasks. It's necessary for keeping the system responsive, but it can slow things down a lot.
  2. Understanding what happens during context switching helps developers find ways to reduce its impact on performance. This includes knowing about CPU registers and how processes interact with the system.
  3. There are specific vulnerabilities and costs associated with context switching that can affect a system's efficiency. Being aware of these can help in optimizing performance.

That's a wrap!

atomic14 • 692 implied HN points • 23 Dec 24
🕹 Technology Development
  1. The speaker has had a busy year filled with exciting projects, including working on small tech boards and experimenting with new materials.
  2. They recently launched the ESP32 Rainbow project, which is fully funded and aimed to be a product soon, with interesting development challenges along the way.
  3. The speaker thanks their supporters, including Patreons, and looks forward to sharing more content and projects in the new year.

Theory

Software Design: Tidy First? • 220 implied HN points • 21 Jul 25
🕹 Technology Development
  1. Software design is all about balancing behavior and structure to create value.
  2. Coupling affects the cost of software changes, meaning changes can get expensive if things are too tightly linked together.
  3. Understanding these principles helps in making better decisions about how to organize and maintain software.

Why This Old Python Performance Trick Doesn’t Matter Anymore

Confessions of a Code Addict • 264 implied HN points • 28 Jun 25
🕹 Technology Development
  1. Performance optimization in Python has changed a lot due to improvements in the Python virtual machine. Tricks that helped in the past may not be needed anymore.
  2. Creating local aliases for functions can speed up access, but recent Python updates have made this less important. In many cases, the performance difference is small now.
  3. Not all lookups are the same—using direct local references or importing functions can still be faster than accessing them through module paths. Always consider readability vs. speed based on your code's needs.

What's up Python? 3.13 is out, t-strings look awesome, dep groups come in handy...

Bite code! • 856 implied HN points • 29 Oct 24
🕹 Technology Development
  1. Python 3.13 has been released, bringing many new features like better error messages and a new JIT compiler. It's exciting, but users are advised to hold off on upgrading until next year.
  2. Template strings (or t-strings) are introduced, offering a cleaner way to create formatted strings that can be used in various situations. This could help prevent mistakes when handling string formatting for tasks like translation or logging.
  3. New proposals like external wheel hosting and dependency groups in pyproject.toml make it easier to manage packages and their dependencies, especially for larger libraries.

LangChain Chatbot Framework With Retrievers

Cobus Greyling on LLMs, NLU, NLP, chatbots & voicebots • 99 implied HN points • 07 May 24
🕹 Technology Development
  1. LangChain helps build chatbots that can have smart conversations by using retrievers for specific information. This makes chatbots more useful in different fields.
  2. Retrievers are tools that find documents based on user questions, providing relevant information without needing to store everything. They help the chatbot give accurate answers.
  3. A step-by-step example shows how to use LangChain with Python, making it easier to create a chatbot that answers user inquiries based on real-time data.

AI Roundup 146: Opus Day

Artificial Ignorance • 58 implied HN points • 28 Nov 25
🕹 Technology Development
  1. Anthropic launched a new coding model, Claude Opus 4.5, which is cheaper than its last version and performs well, helping developers save costs.
  2. There is a memory chip shortage affecting tech companies, making electronics more expensive for consumers, as manufacturers focus on producing chips for AI instead of everyday devices.
  3. China is gaining ground in the AI market by releasing open-source models cheaply, while American companies stick to closed systems, which could reshape how information is shared globally.

In Praise of the Desert

Software Design: Tidy First? • 773 implied HN points • 07 Nov 24
🕹 Technology Development
  1. It's okay to just get things done, even if resources are limited. Sometimes, making progress is a big win.
  2. Working in tough conditions can still lead to success, and many teams create valuable software despite the challenges.
  3. The focus should be on growing skills and thriving, rather than just surviving in difficult situations.

Return of Multi-tasking?

Software Design: Tidy First? • 265 implied HN points • 16 Jun 25
🕹 Technology Development
  1. Multi-tasking is becoming more common in work environments again. People are finding ways to balance multiple tasks effectively.
  2. There's value in focusing on one task at a time, but new tools are changing how we approach work.
  3. Embracing tools and technologies can help integrate multi-tasking into our daily routines.

Cash crops, marketing boards, and agricultural policy failures in Africa

An Africanist Perspective • 455 implied HN points • 18 Feb 23
🌍 World Politics Development
  1. Improving agricultural productivity in Africa is crucial for economic development. Policymakers need to shift towards policies that support small-scale farmers and focus on local value addition before exports.
  2. The role of the state in African agriculture needs to be reconsidered. Historical policies like marketing boards have had both positive and negative impacts, and there is a need for open-mindedness towards government involvement in the sector.
  3. African cash crop producers face challenges in benefiting from their produce due to the structure of international commodity markets. African governments must invest in value addition and convince buyers to support local processing to boost sectoral margins.

Enterprise Generative AI Unfolded

Gradient Flow • 439 implied HN points • 27 Jul 23
🕹 Technology Development
  1. Mastering Model Development & Optimization is crucial for building efficient and powerful Generative AI and Large Language Models. Scaling to large datasets, applying model compression strategies, and efficient model training are key aspects.
  2. Customizability & Fine-tuning are essential to adapt pre-existing LLMs to specific business needs. Techniques like fine-tuning and in-context learning help tailor LLMs for unique use cases, such as adjusting speech synthesis models for customized experiences.
  3. Investing in Operational Tooling & Infrastructure, including robust model hosting, orchestration, and maintenance tools, is vital for efficient and real-time deployment of AI systems in enterprises. Tools for logging, tracking, and enhancing LLM outputs ensure quality control and ongoing improvements.

We went to DevWorld!

Permit.io’s Substack • 179 implied HN points • 01 Mar 24
🕹 Technology Development
  1. DevWorld conference is a great chance for developers to learn and share ideas. It's also a fun place to meet other tech enthusiasts and see new tools.
  2. Focusing on listening rather than selling at events helps better understand the challenges developers face. Connecting over shared experiences can be more valuable than just making business deals.
  3. There are exciting new tools and products in the developer space like Sentry for monitoring, and Ditto for offline connectivity solutions. These innovations aim to improve developer experiences and make their work easier.

The Software Engineer with Alzheimer's

In My Tribe • 273 implied HN points • 05 Jun 25
🕹 Technology Development
  1. AI, like Claude, struggles with memory, especially remembering recent conversations. It's important to find ways to manage this limitation to keep projects on track.
  2. Maintaining state is a key challenge for AI development, which affects how well an AI can serve as a personal assistant. This functionality isn't expected to improve quickly.
  3. AI technology can be very useful, and while people may doubt its potential, history shows that dismissing new tech often proves wrong.

July 2024 update

Opral (lix & inlang) • 19 implied HN points • 06 Aug 24
🕹 Technology Development
  1. The team is moving quickly with rewriting inlang and lix using SQLite instead of git. This change is expected to speed things up a lot.
  2. The release date for the new version is coming at the end of August, so we don't have to wait long.
  3. Lix aims to become a social network where people can share various kinds of their work, like music, video, or design projects.

What it means to be a mentor

Can We Still Govern? • 175 implied HN points • 08 Aug 25
🚌 Education Development
  1. Mentors can greatly influence our lives by encouraging us and helping us see possibilities we never considered. Their support can shape our careers and personal growth.
  2. Mentorship is not just about sharing knowledge but also about understanding the rules of a profession and building confidence in mentees. A simple word of encouragement can make a huge difference.
  3. Being a mentor takes time but can lead to life-changing impacts for those you help. It's important to recognize and appreciate the mentors you've had and the influence they had on your journey.

The Generalize Step In TDD

Software Design: Tidy First? • 265 implied HN points • 06 Jun 25
🕹 Technology Development
  1. TDD is not just about writing tests, it also involves thoughtful design. Practitioners understand the balance between testing and creating a good product structure.
  2. Having good examples in TDD practices is really important for understanding and applying concepts effectively. Clear examples can help break down complex ideas.
  3. There is a common misconception that TDD lacks a design phase, but experienced users know that design is a key part of the process. It's essential to integrate design thinking into TDD for better outcomes.

LangGraph Studio From LangChain

Cobus Greyling on LLMs, NLU, NLP, chatbots & voicebots • 39 implied HN points • 03 Jul 24
🕹 Technology Development
  1. LangGraph helps in creating a flow for conversational applications, allowing for both structured and flexible designs. This means you can manage how chatbots interact without forcing them into a rigid structure.
  2. With LangGraph Studio, users can visualize and control how their AI agents work. It provides tools to track performance, test different scenarios, and optimize interactions effectively.
  3. LangGraph Cloud allows developers to deploy their projects from GitHub and test them in a user-friendly environment. This makes it easier to understand and improve the behavior of AI agents in real-time.

American Governance Is Not Corrupt Enough

Richard Hanania's Newsletter • 487 implied HN points • 16 Feb 25
🇺🇸 U.S. Politics Development
  1. Corruption can sometimes lead to positive outcomes, like faster project approvals. In some cases, letting officials profit from development could actually help communities grow and thrive.
  2. Many politicians aren't as wealthy as people think, and there's little evidence of widespread corruption in government. The average net worth of Congress members isn't that much higher than that of other Americans their age.
  3. Regulations and red tape can hinder progress and development. Sometimes, relaxing those restrictions can lead to better results for society, even if it means embracing a bit of 'good' corruption.