Kenton Vizdos

Kenton Vizdos

@kv.codes

Go & Lit (web components) Developer making cool things Technical Blog @ https://go.kv.codes/blog

66 followers234 following308 posts

Kenton Vizdos
@kv.codes

Needed one change from a feature branch, without dragging the whole branch into main? There is a clean Git move for that. Quick thread on copying a single file across branches, no merge required.

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Kenton Vizdos
@kv.codes

After running it, you still control what lands in main. Review the diff, run tests, then commit just that file change.

Kenton Vizdos
@kv.codes

Takeaway: when you want a targeted update, treat it like a file-level import. Use git restore, keep main clean, and keep the change set small and auditable.

Kenton Vizdos
@kv.codes

Needed one change from a feature branch, without dragging the whole branch into main? There is a clean Git move for that. Quick thread on copying a single file across branches, no merge required.

View full thread
Kenton Vizdos
@kv.codes

Git can restore a file from another branch directly into your working tree. No cherry-pick, no merge commit, no rebasing gymnastics.

Kenton Vizdos
@kv.codes

Command: git restore --source branch_name -- file_path This replaces the file in your current branch with the version from the specified branch.

Kenton Vizdos
@kv.codes

Needed one change from a feature branch, without dragging the whole branch into main? There is a clean Git move for that. Quick thread on copying a single file across branches, no merge required.

Kenton Vizdos
@kv.codes

Scenario: you updated a file in a branch, but main only needs to update that one file. Merging the branch would pull unrelated commits, risk conflicts, and expand the review surface.

Kenton Vizdos
@kv.codes

Go lets you do something that feels illegal: shadow `nil`. Yes, `nil` is not a keyword. It is a predeclared identifier, so you can redefine it in a scope, and the compiler will accept it.

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Kenton Vizdos
@kv.codes

Finally: ```go fmt.Println(x, nil) ``` prints something like: `<nil> a` `x` is still the real nil interface value. `nil` is your local string variable. Same token, different binding.

Kenton Vizdos
@kv.codes

Takeaway: avoid shadowing predeclared identifiers (`nil`, `len`, `new`, `make`). Go allows it, but it creates code that is correct and deeply misleading at the same time.

Kenton Vizdos
@kv.codes

Go lets you do something that feels illegal: shadow `nil`. Yes, `nil` is not a keyword. It is a predeclared identifier, so you can redefine it in a scope, and the compiler will accept it.

View full thread
Kenton Vizdos
@kv.codes

So this line: ```go if x == nil ``` is no longer “is x nil?”. It is “is x equal to the string `a`?”. In other words, it becomes: ```go if x == "a" ```

Kenton Vizdos
@kv.codes

That comparison is false. `x` is a nil interface value, not a string. So the `panic(nil)` never runs, even though it reads like it should. If it did run, it would panic with `"a"`, because `nil` is your string.

Kenton Vizdos
@kv.codes

Go lets you do something that feels illegal: shadow `nil`. Yes, `nil` is not a keyword. It is a predeclared identifier, so you can redefine it in a scope, and the compiler will accept it.

Kenton Vizdos
@kv.codes

In this program: ```go var x any nil := "a" ``` `x` is the zero value for `any`, which is a nil interface value. Then you create a new variable literally named `nil`, holding `"a"`.

Kenton Vizdos
@kv.codes

After `nil := "a"`, every `nil` in that scope refers to your string variable, not the built-in `nil`. You did not change the language, you just hid the predeclared identifier behind a local name.

Kenton Vizdos
@kv.codes

Web Share API enables native sharing from the browser, via `navigator.share({ title, text, url, files })`. It returns a promise, so you can log success vs cancel. Implement feature detection and fall back to copy-to-clipboard for unsupported browsers kv.codes/post/Web-Share-API

kv.codesWeb Share APIA quick dive into the Web Share API: how it works, when to use it, and why it's surprisingly useful for modern web apps (especially on mobile). Includes code, fallbacks, and a few UX tips.
Kenton Vizdos
@kv.codes

linecon was an experience 😆 8pm-8am eeesh. I’ll probably go in a tad later next year ;)

DEF CON@defcon.bsky.social

As you’ve likely heard, attendees in the cash line are getting paper badges right now. This is due to a badge shipment delay. We’re sorry for the inconvenience and we’ll do our best to make it right. Thanks for your understanding. Stay in touch with DEF CON socials for updates. #defcon #defcon33

Kenton Vizdos
@kv.codes

TIL about the rabbit hole that is HLS! 🫨

Stephen Robles@stephenrobles.com

I love RSS + Podcasts, and there's a group of people doing everything they can to make sure RSS can support video Thanks to @transistor.fm Primary Tech is now delivering audio AND video in a single feed with open standards. Podcast apps like Fountain will soon support switching media on the fly

Kenton Vizdos
@kv.codes

Oh Dear.. Why does Selection.getComposedRanges() have MULTIPLE signatures: - Safari: Selection.getComposedRanges(shadowRoot) - Chrome: Selection.getComposedRanges({ shadowRoots: [shadowRoot] }) But hey, now its working in Chrome, Safari (+ iOS), and Firefox! #webcomponents #litjs #webdeveloper

Kenton Vizdos
@kv.codes

Build circuit breakers into your systems. Any time you have a third party dependency: - A) Try to have a fallback in case Primary goes "offline" - B) Still keep up 100% "usability" in your own app; even if it means queuing tasks for later. It will pay dividends. #software

Kenton Vizdos
@kv.codes

The one big struggle I've hit with #golang: there are ZERO nice image creation libraries. Generating OG Images is HELL. Node, you've got this one in the bag. (i still struggled through gg)

Kenton Vizdos
@kv.codes

The HARDEST part about #frontend: When to show a loading state, empty state, and content-ready state. Most solutions are done by time / results shown instantly: decent-enough for most users. But still, I hate it. #typescript

Kenton Vizdos reposted

Brewster Kahle
@brewster.kahle.org

Moment of Gratitude: CloudFlare CloudFlare saved the Internet Archive servers from a DDOS yesterday. Max rate of this DDOS attack was 525 Gbps (44.93 Mpps) of a "TCP flood" @archive.org does not have enough bandwidth to fend off that kind of attack = wouldbe bad saturday. Thank you #CloudFlare

Kenton Vizdos
@kv.codes

What's your devx stack look like? Mine is: - PostHog for UA - GitHub Actions for Pipelines - AWS Fargate for Prod Deployments - Cloudflare Pages for frontends - Terraform for IaC #software #developer

Kenton Vizdos
@kv.codes

What's your favorite hidden gem in #Golang? 🚀 Whether it's a handy stdlib package, a time-saving tool, or a clever pattern, drop your top Go tips below! Let's help each other code smarter. #golangtips #godev

Kenton Vizdos
@kv.codes

As a #webdeveloper, what are your plans for iOS 26? Any big changes in mind? I'm just hoping we get a `-apple-blur` effect that makes things feel native (hahah one can dream).

Kenton Vizdos
@kv.codes

Okay web people.. what are you using for change logs? (e.g. a page for change logs) How automated is it? #software #development #golang #webdev