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viewport and iphone reflow

Something that’s annoyed me for some years is that all the web sites I build don’t work quite right with my iphone. Scroll down a page, visit a link, go back, and safari jumps back to the top of the page. Very annoying. Pretty much no other site I visit seems to have this problem, yet I couldn’t figure out what I was doing wrong since I’m barely doing anything at all. There are some support forum complaints about similar bugs, but mostly from several years ago, and mostly “solved: it works now” without explanation.

Finally, figured out what seems to be the problem. The iphone introduces its own viewport meta tag, to define the screen dimensions, and control whether the user can zoom or not. A lot of sites abuse this to the point of unusability, so I very determinedly stayed clear. But without a viewport tag, safari is really dumb.

Without a viewport setting safari picks some defaults and renders the page to fit. They seem fine to me. The problem is that after leaving a page and coming back, safari has forgotten what size it picked, picks again, and then has to reflow all the page content. Even though it has picked exactly the same dimensions as the previous render. With the result that it forgets its scroll position and resets to the top of the page. Sigh. At least that’s what I’ve determined is going on.

So I finally broke down and added a viewport tag to the header. This required futzing with the CSS some more because now it rendered to a much smaller virtual canvas, but generally solvable.

Anyway, this frustrated me for a long time, I couldn’t find any useful information about it, and now it seems to work.

Posted 19 Apr 2019 17:27 by tedu Updated: 22 Apr 2019 18:55
Tagged: web

the png that squished really big

I posted a tiny png, a mastodon stepped on it, and... it got really big.

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Posted 16 Apr 2019 17:33 by tedu Updated: 16 Apr 2019 17:34
Tagged: software web

removing array duplicates

I had an array with some duplicates. I wanted to remove them. I know how to do this, but I searched for solutions anyway to make sure I wasn’t missing some trick. The results were disappointing, very language specific, and rarely discussed run time. And if we’re working with an unsorted array, the provided answers are even worse. Just sort the array first. Well, duh; any problem with unsorted data can be transformed into a problem with sorted data by sorting first. That’s not very interesting, though, and maybe there’s a reason the data is unsorted. Here’s a few solutions I worked through, but no stunning algorithmic breakthroughs.

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Posted 11 Apr 2019 19:30 by tedu Updated: 11 Apr 2019 19:53
Tagged: programming

honk 0.1

honk is my take on a federated status updater. One might say it’s opinionated software. Since my opinions are correct, this makes honk the world’s first provably correct social media application. Here’s a formerly brief rundown of things that work, things that don’t work, and things that won’t work. Plus some complaints about how other people do things. The version number, 0.1, indicates your expected level of satisfaction.

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Posted 09 Apr 2019 12:36 by tedu Updated: 06 Aug 2019 15:34
Tagged: activitypub project software web

battery consuming battery software

This is a little tour of some software I took today. One of the topics that consistently comes up when people discuss what operating system to run on their laptop is how much battery life to expect, and the answers are all over the map. The focus always seems to be on the kernel and how advanced its scheduler algorithm is, and the minutia of interrupt controllers. We throw around terms like race to sleep. But rarely do I see anyone mention the impact that the software they choose to run spending millions of CPU cycles on trivial tasks might have on battery life. Especially ironic if that software ends up being the software we’re running to monitor how much battery is left.

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Posted 08 Apr 2019 17:12 by tedu Updated: 08 Apr 2019 17:12
Tagged: software

moving to the cloud

I’ve been reading a lot about the benefits of virtualization and cloud deployment. And how to integrate these systems with modern web client design. It was all very exciting. So now I’m pleased to announce flak is fully cloud enabled. Here’s the story of my incredible journey.

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Posted 01 Apr 2019 04:01 by tedu Updated: 01 Apr 2019 04:01
Tagged:

code integrity vs data security

On the last day of AsiaBSDCon, George Neville-Neil gave the keynote talk, Security Fantasies and Realities. Some of it was good and some of it was bad. One of the central points is that the ioshitsunami is coming and in order to save humanity we need to do more of the good security and less of the bad security. One of the, or perhaps just the, good security things to do is hardware root of trust, which I will call TPM, although it has a few brand names.

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Posted 26 Mar 2019 02:15 by tedu Updated: 26 Mar 2019 02:15
Tagged: security software thoughts

honk preview

Some people tweet. (Me, previously.) Some people toot. (No, thank you.) I have decided to honk.

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Posted 24 Mar 2019 10:51 by tedu Updated: 24 Mar 2019 10:51
Tagged: activitypub project web

Thinkpad X1 Carbon 6

I got a new Thinkpad, the 6th gen (2018) X1 Carbon, herein referred to as the t6x1c because why not. I’m not the first to get this laptop, and I’m sure some complete reviews are out there, but a few more personal notes I found interesting.

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Posted 13 Mar 2019 21:51 by tedu Updated: 13 Mar 2019 21:51
Tagged: computers

rewriting everything in go

I’ve been a rather happy lua user for a few years. In particular, the luajit implementation. But as part of an ongoing overhaul of this and that, I decided to rewrite all my lua code in go. Or wait, let me rephrase that.

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Posted 11 Mar 2019 03:25 by tedu Updated: 11 Mar 2019 15:42
Tagged: flak go