I make things that run on the web (mostly).
More /ABOUT me.
And about /PROJECTS I've been involved in.
Email me at me@ognjen.io
me@ognjen.io Twitter LinkedIn Instagram GithubACO is definitely not out of reach of any organization that could benefit from it. But, because it's quite a specialized tool neighboring on academia, the real challenge is knowing that it exists in the first place. (726)
Here are the more technical details of ACO implementation are discussed. The reasoning behind it and the conclusion are in a separate post.ImplementationI started off with an ex... (1795)
The beginning of the MCO was quite stressful but I’m happy about a small victory shown in this screenshot:Supplybunny site was live and taking orders the entire time, handling p... (280)
The beginning of the MCO was quite stressful but I’m happy about a small victory shown in this screenshot:Supplybunny site was live and taking orders the entire time, handling p... (280)
I keep having to look for these four tools when making PWA icons. Convert SVG to PNGhttps://ezgif.com/svg-to-png/ (set the width to at least 512) Make sure the icon ... (92)
A useful pattern that I didn’t see documented before is what I call “state params”: returning different permitted params based on the state of the record.If there is an order mo... (180)
In the course of doing upgrades for an older project I’ve discovered that not every activerecord version is compatible with every mysql2 version. The adapters use ~> to lock ... (147)
Test-driven development and it’s pros and cons have been extensively written about.Most common pros are often said to be having to think or plan your code out before writing, th... (232)
Google has instructions on how to migrate from analytics.js to gtag.js with the steps being straight-forward.While doing this, two things helped me:1. Set up a GAID constantSo, ... (222)
When diagnosing a performance issue look for the end-points that don’t appear in the logs as frequently as they should.If the entire application slows down and all requests are ... (49)
They don't seem to be worth it (185)
Very useful sort in scenarios where context is tied to a date (450)
A running list of examples of design patterns listed in Design Patterns: Elements of Reusable Object-Oriented Software.Periodically updated.CreationalCreate objects, rather than... (596)
Carrierwave Backgrounder is a gem that makes it easier to process assets in background. Resizing and optimization can be done on Sidekiq rather than in the main thread. Very use... (251)
The early daysIn the beginning there was the all-powerful onclick:<button onclick="javascript: increment()">Increment</button><div id="count">0</div><... (835)
“What should we do first?” is always asked when developing a new thing. It’s deceptively simple but can be answered differently depending on who you ask and what you’re building... (375)
Had a scenario for the Supplybunny API where an endpoint needed to return a combination of live and cached data.The cached part was already in use in a few places. The new endpo... (132)
A small tweak is needed to get the first day of the week correctly. (146)
I mainly use Chrome but switch to Firefox every once in a while, just to check how it’s doing. This time I thought I’d write down my opinion, in no particular order.ProsAddons o... (384)
jQuery is still very useful and jQuery validate is great for validation. I’ve written before about how to make custom validators for it. Here are four more (all in coffeescript)... (491)
I mostly use Vue.js due to it’s very intuitive templating system and excellent reactivity. But I still very much miss one specific feature of Backbone.js: collections.In particu... (651)
A while ago I was working on the audit log and wanted to store both the user and the name. That way the name remains and can be shown if the user is deleted. The audited gem sto... (178)
I experimented with sorting items by their average rating and the number of ratings. I wanted to have products with higher number of ratings appear before ones with equal averag... (328)
Been experimenting with Flutter recently and had a use case where I wanted to access SharedPrefernces in Flutter and in native. Surprisingly it was a bit tricky and took a bit o... (288)
I found the example of sending messages between Flutter and native code overly complicated because it’s part of a larger tutorial that includes several different things and does... (598)