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OH: It’s just JavaScript, right? I know JavaScript. My coworker who will inevitably spend the rest of the day debugging an electron issue — @jonkuperman.com on BlueSky “It’s Just JavaScript!” is probably a phrase you’ve heard before. I’ve used it myself a number of times. It gets thrown around a lot, often to imply that a particular project is approachable because it can be achieved writing the same, ubiquitous, standardized scripting language we all know and love: JavaScript. Take what you learned moving pixels around in a browser and apply that same language to running a server and querying a database. You can do both with the same language, It’s Just JavaScript! But wait, what is JavaScript? Is any code in a .js file “Just JavaScript”? Let’s play a little game I shall call: “Is It JavaScript?” Browser JavaScript let el = document.querySelector("#root"); window.location = "https://jim-nielsen.com"; That’s DOM stuff, i.e. browser APIs. Is it JavaScript? “If it runs in the...
3 months ago

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More from Jim Nielsen’s Blog

Successive Prototypes Bridge the Gap Between Idea and Reality

Dismissing an idea because it doesn’t work in your head is doing a disservice to the idea. (Same for dismissing someone else’s idea because it doesn’t work in your head.) The only way to truly know if an idea works is to test it. The gap between an idea and reality is the work. You can’t dismiss something as “not working” without doing the work. When collaborating with others, different ideas can be put forward which end up in competition with each other. We debate which is best, but verbal descriptions don’t do justice to ideas — so the idea that wins is the one whose champion is the most persuasive (or has the most institutional authority). You don’t want that. You want an environment where ideas can be evaluated based on their substance and not on the personal attributes of the person advocating them. This is the value of prototypes. We can’t visualize or predict how our own ideas will play out, let alone other people’s. This is why it’s necessary to bring them to life, have them take concrete form. It’s the only way to do them justice. (Picture a cute puppy in your head. I’ve got one too. Now how do we determine who’s imagining the cuter puppy? We can’t. We have to produce a concrete manifestation for contrast and comparison.) Prototypes are how we bridge the gap between idea and reality. They’re an iterative, evolutionary, exploratory form of birthing ideas that test their substance. People will bow out to a good persuasive argument. They’ll bow out to their boss saying it should be one way or another. But it’s hard to bow out to a good idea you can see, taste, touch, smell, or use. Email · Mastodon · Bluesky

a week ago 13 votes
Consistent Navigation Across My Inconsistent Websites, Part II

I refreshed the little thing that let’s you navigate consistently between my inconsistent subdomains (video recording). Here’s the tl;dr on the update: I had to remove some features on each site to make this feel right. Takeaway: adding stuff is easy, removing stuff is hard. The element is a web component and not even under source control (🤫). I serve it directly from my cdn. If I want to make an update, I tweak the file on disk and re-deploy. Takeaway: cowboy codin’, yee-haw! Live free and die hard. So. Many. Iterations. All of which led to what? A small, iterative evolution. Takeaway: it’s ok for design explorations to culminate in updates that look more like an evolution than a mutation. Want more info on the behind-the-scenes work? Read on! Design Explorations It might look like a simple iteration on what I previously had, but that doesn’t mean I didn’t explore the universe of possibilities first before coming back to the current iteration. v0: Tabs! A tab-like experience seemed the most natural, but how to represent it? I tried a few different ideas. On top. On bottom. Different visual styles, etc. And of course, gotta explore how that plays out on desktop too. Some I liked, some I didn’t. As much as I wanted to play with going to the edges of the viewport, I realized that every browser is different and you won't be able to get a consistent “bleed-like” visual experience across browsers. For example, if you try to make tabs that bleed to the edges, it looks nice in a frame in Figma, and even in some browsers. But it won’t look right in all browser, like iOS Safari. So I couldn’t reliably leverage the idea of a bounded canvas as a design element — which, I should’ve known, has always been the case with the web. v1: Bottom Tabs With a Site Theme I really like this pattern on mobile devices, so I thought maybe I’d consider it for navigating between my sites. But how to theme across differently-styled sites? The favicon styles seemed like a good bet! And, of course, what do to on larger devices? Just stacking it felt like overkill, so I explored moving it to the edge. I actually prototyped this in code, but I didn’t like how it felt so I scratched the idea and went other directions. v2: The Unification The more I explored what to do with this element, the more it started taking on additional responsibility. “What if I unified its position with site-specific navigation?” I thought. This led to design explorations where the disparate subdomains began to take on not just a unified navigational element, but a unified header. And I made small, stylistic explorations with the tabs themselves too. You can see how I played toyed with the idea of a consistent header across all my sites (not an intended goal, but ya know, scope creep gets us all). As I began to explore more possibilities than I planned for, things started to get out of hand. v3: Do More. MORE. MORE!! Questions I began asking: Why aren’t these all under the same domain?! What if I had a single domain for feeds across all of them, e.g. feeds.jim-nielsen.com? What about icons instead of words? Wait, wait, wait Jim. Consistent navigation across inconsistent sites. That’s the goal. Pare it back a little. v4: Reigning It Back In To counter my exploratory ambitions, I told myself I needed to ship something without the need to modify the entire design style of all my sites. So how do I do that? That got me back to a simpler premise: consistent navigation across my inconsistent sites. Better — and implementable. Technical Details The implementation was pretty simple. I basically just forked my previous web component and changed some styles. That’s it. The only thing I did different was I moved the web component JS file from being part of my www.jim-nielsen.com git repository to a standalone file (not under git control) on my CDN. This felt like one of the exceptions to the rule of always keeping stuff under version control. It’s more of the classic FTP-style approach to web development. Granted, it’s riskier, but it’s also way more flexible. And I’m good with that trade-off for now. (Ask me again in a few months if I’ve done anything terrible and now have regrets.) Each site implements the component like this (with a different subdomain attribute for each site): <script type="module" src="https://cdn.jim-nielsen.com/shared/jim-site-switcher.js"></script> <jim-site-switcher subdomain="blog"></jim-site-switcher> That’s really all there is to say. Thanks to Zach for prodding me to make this post. Email · Mastodon · Bluesky

a week ago 12 votes
Bottomless Subtleties

Jason Fried writes in his post “Knives and battleships”: Specific tools and familiar ingredients combined in different ratios, different molds, for different purposes. Like a baker working from the same tight set of pantry ingredients to make a hundred distinct recipes. You wouldn't turn to them and say "enough with the butter, flour, sugar, baking powder, and eggs already!" Getting the same few things right in different ways is a career's worth of work. Mastery comes from a lifetime of putting together the basics in different combinations. I think of Beethoven’s 5th and its famous “short-short-short-long” motif. The entire symphony is essentially the same core idea repeated and developed relentlessly! The same four notes (da-da-da-DAH!) moving between instruments, changing keys, etc. Beethoven took something basic — a four note motif — and extracted an enormous set of variations. Its genius is in illustrating how much can be explored and expressed within constraints (rather than piling on “more and more” novel stuff). Back to Jason’s point: the simplest building blocks in any form — music, code, paint, cooking — implemented with restraint can be combined in an almost infinite set of pleasing ways. As Devine noted (and I constantly link back to): we haven’t even begun to scratch the surface of what we can do with less. Email · Mastodon · Bluesky

2 weeks ago 13 votes
Just a Little More Context Bro, I Promise, and It’ll Fix Everything

Conrad Irwin has an article on the Zed blog “Why LLMs Can't Really Build Software”. He says it boils down to: the distinguishing factor of effective engineers is their ability to build and maintain clear mental models We do this by: Building a mental model of what you want to do Building a mental model of what the code does Reducing the difference between the two It’s kind of an interesting observation about how we (as humans) problem solve vs. how we use LLMs to problem solve: With LLMs, you stuff more and more information into context until it (hopefully) has enough to generate a solution. With your brain, you tweak, revise, or simplify your mental model more and more until the solution presents itself. One adds information — complexity you might even say — to solve a problem. The other eliminates it. You know what that sort of makes me think of? NPM driven development. Solving problems with LLMs is like solving front-end problems with NPM: the “solution” comes through installing more and more things — adding more and more context, i.e. more and more packages. LLM: Problem? Add more context. NPM: Problem? There’s a package for that. Contrast that with a solution that comes through simplification. You don’t add more context. You simplify your mental model so you need less to solve a problem — if you solve it at all, perhaps you eliminate the problem entirely! Rather than install another package to fix what ails you, you simplify your mental model which often eliminates the problem you had in the first place; thus eliminating the need to solve any problem at all, or to add any additional context or complexity (or dependency). As I’m typing this, I’m thinking of that image of the evolution of the Raptor engine, where it evolved in simplicity: This stands in contrast to my working with LLMs, which often wants more and more context from me to get to a generative solution: I know, I know. There’s probably a false equivalence here. This entire post started as a note and I just kept going. This post itself needs further thought and simplification. But that’ll have to come in a subsequent post, otherwise this never gets published lol. Email · Mastodon · Bluesky

2 weeks ago 15 votes
Choosing Tools To Make Websites

Jan Miksovsky lays out his idea for website creation as content transformation. He starts by talking about tools that hide what’s happening “under the hood”: A framework’s marketing usually pretends it is unnecessary for you to understand how its core transformation works — but without that knowledge, you can’t achieve the beautiful range of results you see in the framework’s sample site gallery. This is a great callout. Tools will say, “You don’t have to worry about the details.” But the reality is, you end up worrying about the details — at least to some degree. Why? Because what you want to build is full of personalization. That’s how you differentiate yourself, which means you’re going to need a tool that’s expressive enough to help you. So the question becomes: how hard is it to understand the details that are being intentionally hidden away? A lot of the time those details are not exposed directly. Instead they’re exposed through configuration. But configuration doesn’t really help you learn how something works. I mean, how many of you have learned how typescript works under the hood by using tsconfig.json? As Jan says: Configuration can lead to as many problems as it solves Nailed it. He continues: Configuring software is itself a form of programming, in fact a rather difficult and often baroque form. It can take more data files or code to configure a framework’s transformation than to write a program that directly implements that transformation itself. I’m not a Devops person, but that sounds like Devops in a nutshell right there. (It also perfectly encapsulates my feelings on trying to setup configuration in GitHub Actions.) Jan moves beyond site creation to also discuss site hosting. He gives good reasons for keeping your website’s architecture simple and decoupled from your hosting provider (something I’ve been a long time proponent of): These site hosting platforms typically charge an ongoing subscription fee. (Some offer a free tier that may meet your needs.) The monthly fee may not be large, but it’s forever. Ten years from now you’ll probably still want your content to be publicly available, but will you still be happy paying that monthly fee? If you stop paying, your site disappears. In subscription pricing, any price (however small) is recurring. Stated differently: pricing is forever. Anyhow, it’s a good read from Jan and lays out his vision for why he’s building Web Origami: a tool for that encourages you to understand (and customize) how you transform content to a website. He just launched version 0.4.0 which has some exciting stuff I’m excited to try out further (I’ll have to write about all that later). Email · Mastodon · Bluesky

2 weeks ago 14 votes

More in programming

Bear is now source-available

Updates to the Bear license

7 hours ago 3 votes
Exploring Interlisp-10 and TWENEX

<![CDATA[I'm exploring another corner of the Interlisp ecosystem and history: the Interlisp-10 implementation for DEC PDP-10 mainframes, a 1970s character based environment that predated the graphical Interlisp-D system. I approached this corner when I set out to learn and experiment with a tool I initially checked out only superficially, the TTY editor. This command line structure editor for Lisp code and expressions was the only one of Interlisp-10. The oldest of the Interlisp editors, it came before graphical interfaces and SEdit. On Medley Interlisp the TTY editor is still useful for specialized tasks. For example, its extensive set of commands with macro support is effectively a little language for batch editing and list structure manipulation. Think Unix sed for s-exps. The language even provides the variable EDITMACROS (wink wink). Evaluating (PRINTDEF EDITMACROS) gives a flavor for the language. For an experience closer to 1970s Interlisp I'm using the editor in its original environment, Interlisp-10 on TWENEX. SDF provides a publicly accessible TWENEX system running on a PDP-10 setup. With the product name TOPS-20, TWENEX was a DEC operating system for DECSYSTEM-20/PDP-10 mainframes derived from TENEX originally developed by BBN. SDF's TWENEX system comes with Interlisp-10 and other languages. This is Interlisp-10 in a TWENEX session accessed from my Linux box: A screenshot of a Linux terminal showing Interlisp-10 running under TWENEX in a SSH session. Creating a TWENEX account is straightforward but I didn't receive the initial password via email as expected. After reporting this to the twenex-l mailing list I was soon emailed the password which I changed with the TWENEX command CHANGE DIRECTORY PASSWORD. Interacting with TWENEX is less alien or arcane than I thought. I recognize the influence of TENEX and TWENEX on Interlisp terminology and notation. For example, the Interlisp REPL is called Exec after the Exec command processor of the TENEX operating system. And, like TENEX, Interlisp uses angle brackets as part of directory names. It's clear the influence of these operating systems also on the design of CP/M and hence MS-DOS, for example the commands DIR and TYPE. SDF's TWENEX system provides a complete Interlisp-10 implementation with only one notable omission: HELPSYS, the interactive facility for consulting the online documentation of Interlisp. The SDF wiki describes the basics of using Interlisp-10 and editing Lisp code with the TTY editor. After a couple of years of experience with Medley Interlisp the Interlisp-10 environment feels familiar. Most of the same functions and commands control the development tools and facilities. My first impression of the TTY editor is it's reasonably efficient and intuitive to edit Lisp code, at least using the basic commands. One thing that's not immediately apparent is that EDITF, the entry point for editing a function, works only with existing functions and can't create new ones. The workaround is to define a stub from the Exec like this: (DEFINEQ (NEW.FUNCTION () T)) and then call (EDITF NEW.FUNCTION) to flesh it out. Transferring files between TWENEX and the external world, such as my Linux box, involves two steps because the TWENEX system is not accessible outside of SDF. First, I log into Unix on sdf.org with my SDF account and from there ftp to kankan.twenex.org (172.16.36.36) with my TWENEX account. Once the TWENEX files are on Unix I access them from Linux with scp or sftp to sdf.org. This may require the ARPA tier of SDF membership. Everything is ready for a small Interlisp-10 programming project. #Interlisp #Lisp a href="https://remark.as/p/journal.paoloamoroso.com/exploring-interlisp-10-and-twenex"Discuss.../a Email | Reply @amoroso@oldbytes.space !--emailsub--]]>

10 hours ago 3 votes
you can never go back

Total disassociation, fully out your mind That Funny Feeling I was thinking today about a disc jockey. Like one in the 80s, where you actually had to put the records on the turntables to get the music. You move the information. You were the file system. I like the Retro Game Mechanics channel on YouTube. What was possible was limited by the hardware, and in a weird way it forced games to be good. Skill was apparent by a quick viewing, and different skill is usually highly correlated. Good graphics meant good story – not true today. I was thinking about all the noobs showing up to comma. If you can put a technical barrier up to stop them, like it used to be. But you can’t. These barriers can’t be fake, because a fake barrier isn’t like a real barrier. A fake barrier is one small patch away from being gone. What if the Internet was a mistake? I feel like it’s breaking my brain. It was this mind expanding world in my childhood, but now it’s a set of narrow loops that are harder and harder to get out of. And you can’t escape it. Once you have Starlink to your phone, not having the Internet with you will be a choice, not a real barrier. There’s nowhere to hide. Chris McCandless wanted to be an explorer, but being born in 1968 meant that the world was already all explored. His clever solution, throw away the map. But that didn’t make him an explorer, it made him an idiot who died 5 miles from a bridge that would have saved his life. And I’ll tell you something else that you ain’t dying enough to know Big Casino Sure, you can still spin real records, code for the NES, and SSH into your comma device. But you don’t have to. And that makes the people who do it come from a different distribution from the people who used to. They are not explorers in the same way Chris McCandless wasn’t. When I found out about the singularity at 15, I was sure it was going to happen. It was depressing for a while, realizing that machines would be able to do everything a lot better than I could. But then I realized that it wasn’t like that yet and I could still work on this problem. And here I am, working in AI 20 years later. I thought I came to grips with obsolescence. But it’s not obsolescence, the reality is looking to be so much sadder than I imagined. It won’t be humans accepting the rise of the machines, it won’t be humans fighting the rise of the machines, it will be human shaped zoo animals oddly pacing back and forth in a corner of the cage while the world keeps turning around them. It’s easy to see the appeal of conspiracy theories. Even if they hate you, it’s more comforting to believe that they exist. That at least somebody is driving. But that’s not true. It’s just going. There are no longer Western institutions capable of making sense of the world. (maybe the Chinese ones can? it’s hard to tell) We are shoved up brutally against evolution, just of the memetic variety. The TikTok brainrot kids will be nothing compared to the ChatGPT brainrot kids. And I’m not talking like an old curmudgeon about the new forms of media being bad and the youth being bad like Socrates said. Because you can never go back. It will be whatever it is. To every fool preaching the end of history, evolution spits in your face. To every fool preaching the world government AI singleton, evolution spits in your face. I knew these things intellectually, but viscerally it’s just hard to live through. The world feels so small and I feel like I’m being stared at by the Eye of Sauron.

yesterday 4 votes
Why Amateur Radio

I always had a diffuse idea of why people are spending so much time and money on amateur radio. Once I got my license and started to amass radios myself, it became more clear.

3 days ago 9 votes
strongly typed?

What does it mean when someone writes that a programming language is “strongly typed”? I’ve known for many years that “strongly typed” is a poorly-defined term. Recently I was prompted on Lobsters to explain why it’s hard to understand what someone means when they use the phrase. I came up with more than five meanings! how strong? The various meanings of “strongly typed” are not clearly yes-or-no. Some developers like to argue that these kinds of integrity checks must be completely perfect or else they are entirely worthless. Charitably (it took me a while to think of a polite way to phrase this), that betrays a lack of engineering maturity. Software engineers, like any engineers, have to create working systems from imperfect materials. To do so, we must understand what guarantees we can rely on, where our mistakes can be caught early, where we need to establish processes to catch mistakes, how we can control the consequences of our mistakes, and how to remediate when somethng breaks because of a mistake that wasn’t caught. strong how? So, what are the ways that a programming language can be strongly or weakly typed? In what ways are real programming languages “mid”? Statically typed as opposed to dynamically typed? Many languages have a mixture of the two, such as run time polymorphism in OO languages (e.g. Java), or gradual type systems for dynamic languages (e.g. TypeScript). Sound static type system? It’s common for static type systems to be deliberately unsound, such as covariant subtyping in arrays or functions (Java, again). Gradual type systems migh have gaping holes for usability reasons (TypeScript, again). And some type systems might be unsound due to bugs. (There are a few of these in Rust.) Unsoundness isn’t a disaster, if a programmer won’t cause it without being aware of the risk. For example: in Lean you can write “sorry” as a kind of “to do” annotation that deliberately breaks soundness; and Idris 2 has type-in-type so it accepts Girard’s paradox. Type safe at run time? Most languages have facilities for deliberately bypassing type safety, with an “unsafe” library module or “unsafe” language features, or things that are harder to spot. It can be more or less difficult to break type safety in ways that the programmer or language designer did not intend. JavaScript and Lua are very safe, treating type safety failures as security vulnerabilities. Java and Rust have controlled unsafety. In C everything is unsafe. Fewer weird implicit coercions? There isn’t a total order here: for instance, C has implicit bool/int coercions, Rust does not; Rust has implicit deref, C does not. There’s a huge range in how much coercions are a convenience or a source of bugs. For example, the PHP and JavaScript == operators are made entirely of WAT, but at least you can use === instead. How fancy is the type system? To what degree can you model properties of your program as types? Is it convenient to parse, not validate? Is the Curry-Howard correspondance something you can put into practice? Or is it only capable of describing the physical layout of data? There are probably other meanings, e.g. I have seen “strongly typed” used to mean that runtime representations are abstract (you can’t see the underlying bytes); or in the past it sometimes meant a language with a heavy type annotation burden (as a mischaracterization of static type checking). how to type So, when you write (with your keyboard) the phrase “strongly typed”, delete it, and come up with a more precise description of what you really mean. The desiderata above are partly overlapping, sometimes partly orthogonal. Some of them you might care about, some of them not. But please try to communicate where you draw the line and how fuzzy your line is.

4 days ago 14 votes