The hottest Development Substack posts right now

And their main takeaways
Category
Top Technology Topics

The Essential Intangibles

DruGroup • 139 implied HN points • 03 Sep 24
💼 Business Development
  1. Being a skilled leader isn't enough; you also need certain qualities called intangibles. These qualities may not be easy to measure, but they are essential for effective leadership.
  2. Leadership intangibles include selflessness, risk-taking, and transparency. Focusing on these traits can help leaders build better relationships with their teams.
  3. You can learn and improve these intangibles through your everyday experiences, rather than needing special training. Recognizing and addressing your blind spots can make a big difference.

Deconstructing the Transformers ReAct JSON System Prompt

Encyclopedia Autonomica • 39 implied HN points • 13 Oct 24
🕹 Technology Development
  1. Transformers use a specific structure for commands called JSON. This makes it easier to describe actions clearly and effectively.
  2. The system prompt includes rules that the agent must follow, like focusing on one action at a time and using the correct values for inputs.
  3. The design also emphasizes iterative reasoning, where the agent can build on previous observations to make better decisions in tasks.

Irony too funny for words

Marcus on AI • 8813 implied HN points • 06 Feb 25
🕹 Technology Development
  1. Once something is released into the world, you can't take it back. This is especially true for AI technology.
  2. AI developers should consider the consequences of their creations, as they can lead to unexpected issues.
  3. Companies may want to ensure genuine communication from applicants, but relying on AI for tasks is now common.

Data: a swift-foundation deep-dive

Jacob’s Tech Tavern • 3280 implied HN points • 30 Jun 25
🕹 Technology Development
  1. Data is essential for making applications work smoothly, acting like the oil in a machine. Without it, everything would grind to a halt.
  2. The Foundation library has been around for a long time, helping with things like data management and networking. It's getting a modern upgrade to work better across different platforms.
  3. Understanding how Data is built in the swift-foundation gives insights into its importance and functionality in coding. It's crucial for developers to know how it works under the hood.

What's up Python? You already know :)

Bite code! • 978 implied HN points • 09 Nov 25
🕹 Technology Development
  1. Python 3.9 is reaching its End Of Life, which means it won't get any more security updates.
  2. Several new versions of Python have been released, including 3.13.9 and 3.12.12, and a new alpha version, Python 3.15.
  3. A new Django 6 beta is available, introducing features like template partials and background tasks, but it stops supporting older versions of Python.
Get a weekly roundup of the best Substack posts, by hacker news affinity:

Blue states don't build

Noahpinion • 24176 implied HN points • 28 Dec 23
🇺🇸 U.S. Politics Development
  1. Blue states are losing population and Congressional seats to red states due to migration.
  2. Housing costs play a significant role in people moving from blue states to red states.
  3. Blue states need to focus on developing more housing and embracing green energy policies to thrive.

High Performance SwiftData Apps

Jacob’s Tech Tavern • 2842 implied HN points • 14 Jul 25
🕹 Technology Development
  1. The app developed for Comic-Con was popular for its cool features but struggled with performance issues. As I used it, the app got slower, draining the battery and eventually crashing.
  2. I needed to improve the app's performance by optimizing how it used SwiftData without losing the cards I had already created. It was important to keep my collection safe while fixing the issues.
  3. This experience highlighted how vital it is to focus on app efficiency and data management to avoid frustration for users and devices alike.

🛑🚼 The end of (demographic) history

Faster, Please! • 548 implied HN points • 14 Dec 25
🔬 Science Development
  1. The global fertility transition seems to have largely finished, so the classic story of steadily falling birth rates is no longer the clear master narrative.
  2. Even with that shift, the demographic future is uncertain — demographers don’t know exactly how birth rates, aging, and migration will evolve next.
  3. That uncertainty has big policy and economic implications, because different population paths lead to very different outcomes for growth, labor markets, and public finances.

How to Learn the Swift Source Code

Jacob’s Tech Tavern • 2624 implied HN points • 22 Jul 25
🕹 Technology Development
  1. To learn the Swift source code, focus on understanding three key areas: the standard library, the compiler, and the runtime. These are the core building blocks that will help you make sense of the code.
  2. The 'type(of:)' function is important as it helps you find out the dynamic type of an object during debugging. It's a useful tool for any Swift developer to know about.
  3. Looking into the built-in types and how they operate can deepen your understanding of Swift's performance. Exploring the internals can make working with Swift more intuitive.

Vibe-Coding a PCB - surprisingly good

atomic14 • 2598 implied HN points • 12 Jul 25
🕹 Technology Development
  1. Vibe-coding a PCB is about using AI to design hardware from natural language prompts. It's a fun way to simplify the building process.
  2. Using a tool like Atopile and an AI assistant can yield surprisingly good results, even if there are small mistakes. Just a little guidance can help fix issues.
  3. This method is close to changing how we create hardware, making it easier for people without engineering skills to get involved in tech projects.

My ADHD vs. the AlarmKit API

Jacob’s Tech Tavern • 1968 implied HN points • 28 Jul 25
🕹 Technology Development
  1. Setting alarms is crucial for daily management. They help keep a structured life, especially for those who might forget tasks easily.
  2. Apple's AlarmKit API allows users to create their own timers and alarms. This new feature can enhance control and personalization over reminders.
  3. Understanding how AlarmKit works can empower users to improve their productivity. It’s an exciting tool for anyone looking to manage their time better.

What "Parse, don't validate" means in Python?

Bite code! • 1834 implied HN points • 23 Jul 25
🕹 Technology Development
  1. 'Parse, don't validate' means that we should focus on understanding and converting our input into a usable format instead of just checking if it's correct. This makes our code more reliable.
  2. Parsing is about changing raw data into a structured format that makes it easier to work with, which can also help us avoid mistakes later on.
  3. In Python, the way we structure our data impacts how much work we need to do and how confident we can be in our code. It's important to find the right balance of parsing versus performance.

Defending the status quo is not environmentalism

Noahpinion • 12941 implied HN points • 05 Mar 24
🌞 Climate & Environment Development
  1. American environmentalism began as conservationism, aiming to protect natural habitats from industrial encroachment.
  2. Modern environmental challenges require building new things like solar panels and dense cities with high-quality infrastructure.
  3. There is a fundamental disagreement within the U.S. environmental movement between those who envision reshaping human development for nature's harmony and those who want to maintain the status quo.

Why small developers are getting squeezed out of the housing market

Noahpinion • 11588 implied HN points • 02 Mar 24
💼 Business Development
  1. Traditional banks aren't willing to take on the risks associated with financing small real estate development projects due to the complex and risky nature of construction work.
  2. Small developers struggle to access financing from traditional lenders because they lack the track record and financial resources required to secure loans, creating a barrier to entry in the industry.
  3. Institutionalization of real estate development by large firms can lead to a loss of community identity, charm, and personalized building designs, highlighting the importance of supporting small developers in creating unique and vibrant neighborhoods.

Through the Ages: Apple Concurrency APIs

Jacob’s Tech Tavern • 1749 implied HN points • 24 Jun 25
🕹 Technology Development
  1. Apple's concurrency APIs have evolved significantly since 1977, with each new version reflecting advancements in technology. Today, developers can handle complex tasks easily, thanks to modern tools.
  2. In the early days of computing, like with the Apple ][, parallel processing was nearly impossible because machines had limited capabilities. Over the years, technology grew, leading to better tools for developers.
  3. Swift Concurrency is considered a major breakthrough for the Swift programming language, making it easier to manage multiple tasks and streamline code.

Do poor countries need a new development strategy?

Noahpinion • 10647 implied HN points • 08 Feb 24
🌍 World Politics Development
  1. The debate over development strategies for poor countries is evolving, with a shift towards focusing on green energy and non-traded services rather than traditional manufacturing and exports.
  2. Authors like Dani Rodrik and Joseph Stiglitz argue that poorer countries may face challenges in industrialization due to factors like reduced global demand for manufactured goods and increased automation.
  3. Successful growth stories of countries like Bangladesh challenge the notion that industrialization is no longer a viable development strategy for poor nations, emphasizing the importance of traditional methods for economic progress.

The Synchronization Framework in Swift 6

Jacob’s Tech Tavern • 3936 implied HN points • 30 Dec 24
🕹 Technology Development
  1. Swift 6 introduced a new Synchronization framework that includes features like Mutex and Atomics. These help manage how different parts of a program can work together safely.
  2. The new concurrency tools are based on a concept called generic ownership, which is new for Swift 6. This means they have better performance and flexibility.
  3. The article also compares these new low-level features to high-level ones like Actors to see how they perform. This can help developers choose the right tool for their needs.

Getting silly with C, part (void*)2

lcamtuf’s thing • 3673 implied HN points • 10 Jan 25
🕹 Technology Development
  1. Understanding C's syntax can be tricky, especially with function declarations and typedefs. You'll find that some definitions may not be exactly what they seem.
  2. C allows some flexibility with variable and function declarations, which can lead to surprising behaviors, so always double-check how your symbols interact in different scopes.
  3. There are quirky features in C, like a BASIC compatibility mode for line numbering, showing that the language has some fun, unexpected twists!

Real-time systems with Combine and WebSockets

Jacob’s Tech Tavern • 1530 implied HN points • 16 Jun 25
🕹 Technology Development
  1. WebSockets are great for real-time communication because they keep a constant connection open, allowing data to flow smoothly without the delays of making separate requests. This is much more efficient than traditional methods.
  2. Combine is a powerful tool that helps manage and combine streams of data in a clean and organized way. When used with WebSockets, it makes building reactive applications easier and more straightforward.
  3. Using real-time systems can enhance user experience in various applications, like gaming or auctions, by providing instant updates and interactions. Implementing these technologies can help create engaging and responsive apps.

Notes on Nix

Cloud Irregular • 2956 implied HN points • 20 Jan 25
🕹 Technology Development
  1. Nix is a tool that helps you set up your software environment the same way every time, making deployments easier. It's designed to manage software dependencies reliably.
  2. Nix can be complex to learn, especially because it uses functional programming concepts. This makes some programmers hesitant to adopt it.
  3. While Docker is useful for containerization, Nix offers better reproducibility for builds by focusing on what the environment should look like, rather than just the steps to create it.

Kent's Going Home

Software Design: Tidy First? • 905 implied HN points • 12 Aug 25
🕹 Technology Development
  1. The author has recently bought a house after a significant life change, marking a fresh start. It's a big step after a challenging nine years, and they feel emotional about it.
  2. They mention wanting to hear waves, which suggests a longing for peace and connection to nature in their new home. The sound of waves symbolizes a calming new beginning.
  3. The author is keeping some details private to protect their personal life, but they are excited about this new chapter. It's clear that this move is meaningful and brings them happiness.

JailBreak Protection on iOS

Jacob’s Tech Tavern • 2624 implied HN points • 04 Feb 25
🕹 Technology Development
  1. Jailbreaking on iOS means exploiting security flaws to gain more control over the device. This allows users to install apps outside of Apple's approval process and customize their phones more freely.
  2. While jailbreaking can be fun, it can also make devices less secure. People can easily install tools that can read private app data, leading to security risks.
  3. Developers should consider adding jailbreak protection to their apps. This helps safeguard sensitive information and prevents unauthorized access, keeping both the app and user safer.

Hardcore Debugging

Jacob’s Tech Tavern • 2842 implied HN points • 13 Jan 25
🕹 Technology Development
  1. Bugs in apps can sometimes be easy to fix, but some problems are hidden deep in the system and harder to find. These serious issues can cause crashes that are tricky to solve.
  2. When dealing with a crash, you can use tools like Git Bisect to look back in time or symbolicate crash logs to find out what went wrong. These methods help narrow down the problem.
  3. Understanding how crashes occur in the kernel memory management can take time, but specific techniques exist to make debugging easier and faster. It's all about using the right tools at the right time.

The Mental Characteristics of Resilient High Performers

Voohy Leadership Insights • 79 implied HN points • 11 Aug 24
💼 Business Development
  1. High performers tend to be positive and proactive. They actively look for challenges and always want to get better.
  2. Resilient people learn from tough experiences by reflecting on them. They see these moments as chances to grow.
  3. It's important to have a support system in place. High achievers feel they have good support from others, which helps them succeed.

Demystifying GPU Compute Software

The Chip Letter • 6989 implied HN points • 10 Mar 24
🕹 Technology Development
  1. GPU software ecosystems are crucial and as important as the GPU hardware itself.
  2. Programming GPUs requires specific tools like CUDA, ROCm, OpenCL, SYCL, and oneAPI, as they are different from CPUs and need special support from hardware vendors.
  3. The effectiveness of GPU programming tools is highly dependent on support from hardware vendors due to the complexity and rapid changes in GPU architectures.

A bunker of rare earths. No more Lightning. Pandemic security. Jakarta's growth.

Chartbook • 157 implied HN points • 18 Dec 25
🌍 World Politics Development
  1. Countries are building secure stockpiles of rare earth minerals, underscoring their strategic importance for technology and defense.
  2. A program or product called "Lightning" is being ended, signaling a shift away from that specific technology or platform.
  3. Pandemic security is a major policy concern, and Jakarta is experiencing notable economic and urban growth that matters for planning and development.

Monthly Python Data Engineering, August 2024

Monthly Python Data Engineering • 59 implied HN points • 19 Aug 24
🕹 Technology Development
  1. Datafusion Comet was released, making it easier and faster to use Apache Spark for data processing, which is great for improving performance.
  2. Several major data tools like Datafusion, Arrow, and Dask updated their versions, showing ongoing improvements in speed, efficiency, and new features.
  3. New dashboard solutions like Panel and updates in libraries such as CUDF reflect the growing interest in making data access and visualization easier for users.

What's up Python? Unpacking in Comprehensions, Android Wheels, and uv is a big boy now...

Bite code! • 856 implied HN points • 01 Aug 25
🕹 Technology Development
  1. PEP 798 aims to introduce unpacking in comprehensions, making it easier to combine elements from different iterables in Python.
  2. cibuildwheel has added support for building Python packages on Android, making it more versatile for app development.
  3. The uv tool now installs Python versions directly into the system PATH and registers them with the Windows Registry, making it a strong alternative for managing Python installations.

Cloud Development Environments Tame Complexity By Reducing State

Software Design: Tidy First? • 729 implied HN points • 14 Aug 25
🕹 Technology Development
  1. Using cloud development environments can help reduce the complexity of coding by providing a stable setup that everyone can rely on. This means fewer interruptions and more time for actual coding.
  2. When development environments are the same for everyone, it simplifies tracking issues and fixing problems, making it easier to return to a known good state if something goes wrong.
  3. Developers might take more creative risks and try new projects since they won't be as worried about wasting time fixing setup issues. This could lead to new, valuable software that wouldn't have been created otherwise.

Softcore Debugging

Jacob’s Tech Tavern • 2405 implied HN points • 21 Jan 25
🕹 Technology Development
  1. Xcode has many built-in debugging tools that can help developers troubleshoot their apps. It's helpful to explore these tools to find new ways to fix issues.
  2. Conditional breakpoints can make debugging more efficient by allowing developers to stop the app under specific conditions. This saves time during the debugging process.
  3. Learning faster LLDB commands and memory graph traversal techniques can enhance a developer's ability to diagnose issues quickly. Familiarizing yourself with these options can improve coding skills.

Does it matter where immigrants come from?

ideassleepfuriously • 982 implied HN points • 23 Jan 24
🌍 World Politics Development
  1. Immigrants' success and impact vary based on their country of origin and culture
  2. European and some Asian immigrants tend to be disproportionately successful in terms of wealth creation and professional achievement
  3. Uncontrolled immigration from non-Western countries can have negative cultural and economic implications

The Swift Compiler

Jacob’s Tech Tavern • 2624 implied HN points • 24 Dec 24
🕹 Technology Development
  1. The Swift language was created by Chris Lattner, who also developed LLVM when he was just 23 years old. That's really impressive given how complex these technologies are!
  2. It's important to understand what type of language Swift is, whether it's compiled or interpreted, especially for job interviews in tech. Knowing this can help you stand out.
  3. Learning about the Swift compiler can help you appreciate the language's features and advantages better, making you a stronger developer overall.

What new towns can learn from Ebbsfleet

Odds and Ends of History • 804 implied HN points • 01 Aug 25
🎭️ Culture Development
  1. Ebbsfleet is a unique example of a new town in Britain that can teach us both what to do and what to avoid when building new communities. It's important to learn from past successes and failures.
  2. New towns should be built close to transport links, like train stations, to make them accessible and attractive to residents.
  3. Proper planning is crucial. If new towns are poorly designed, like too car-centric or isolated, residents can feel disconnected and unhappy.

Must we have these institutions forever?

Something to Consider • 139 implied HN points • 10 Jul 24
📖 Philosophy Development
  1. Our institutions and rules affect how well a society can produce and grow. Good institutions help foster trust among people, while bad ones can keep societies trapped in poverty.
  2. The legacy of harmful practices, like the slave trade, has long-lasting effects on trust and cooperation in societies. Areas that were heavily affected tend to have less trust even today.
  3. Changing poor institutions can help lift countries out of poverty. This might involve outside help or imposing better rules that foster cooperation and trust among the people.

Testing Too Late: A Case Study

QUALITY BOSS • 139 implied HN points • 09 Jul 24
🕹 Technology Development
  1. Testing too late can cause big delays in getting software to users. If QA is behind, it creates confusion and slows down the whole process.
  2. Good communication between development and QA teams is really important. Working in separate sprints can lead to misunderstandings and more difficult bug fixes.
  3. It's essential to define when a task is 'done' to include testing. If something isn't tested, it shouldn't be considered complete, ensuring that quality stays high.

Highlights From The Comments On Capitalism & Charity

Astral Codex Ten • 6744 implied HN points • 11 Jan 24
💼 Business Development
  1. Some comments argue for reiterating the importance of a specific context when considering spending money for charity or capitalism.
  2. There are discussions on the effectiveness of investing in companies with social missions, such as providing microfinance or supporting profitable charitable ventures.
  3. Consideration is given to the balance between supporting capitalism and charitable causes in the context of economic impact and sustainability.

Slashing my ".bashrc" in half

Bite code! • 1834 implied HN points • 20 Feb 25
🕹 Technology Development
  1. Using new tools like Atuin and Starship can make your terminal experience much simpler and faster. They help reduce the size of configuration files like .bashrc while still providing great features.
  2. The rise of Rust has led to better command-line tools that are efficient and user-friendly. These tools replace many old commands and plugins with minimal effort needed from users.
  3. It's okay to stop using some tools or plugins if they aren't effective for your needs. Keeping your setup clean and understandable is more important than having every possible feature.

Let's compile Python 1.0

Bite code! • 1957 implied HN points • 05 Feb 25
🕹 Technology Development
  1. Python 1.0 was surprisingly advanced for its time, with features like high-level data structures and ways to handle processes and files. It showed a lot of capabilities despite being the first major version.
  2. Compiling Python 1.0 requires some old tools and a legacy environment, as modern systems might not support all the necessary components. Using containers can help recreate this older setup.
  3. Even in its early stage, Python had a live REPL and error handling, making it quite user-friendly. Developers were able to perform a variety of tasks easily, which made Python appealing compared to other programming languages at the time.

What's up Python? A new Windows installer, ruff will type check, Pypi quarantines...

Bite code! • 1957 implied HN points • 01 Feb 25
🕹 Technology Development
  1. PEP 773 is proposing a new way to install Python on Windows. It aims to simplify the installation process by using one tool for all versions and making it easier for users to manage them.
  2. Ruff, a popular linter, is getting a type checking feature added soon. This change will help improve Python's type checking and make it more user-friendly.
  3. Pypi has introduced a quarantining system for potentially harmful projects. This will block access to projects suspected of containing malware without completely removing them, allowing for better security.