Today Dmytro Learned

TIL is short for "Today I Learned" and it's where I collect small, practical nuggets of information that I've recently discovered or explained to someone. I believe these little gems of knowledge are too useful to be lost in the vastness of social media platforms like Twitter or GitHub comments, so I keep them safe here. Think of TIL as my digital garden, where I can nurture these nuggets of knowledge and watch them grow. 🌱

2024

⚽ Vanilla JavaScript - Wildcard (*) Selector

Mar

In vanilla JavaScript, we can use wildcard (*) to match multiple elements (nodes) in the HTML DOM object. We can also match elements with attribute starting with, ending with or contains certain values. For example, the following selectors will [name^="password"] will match all elements with name starting with

2024

6️⃣4️⃣ Base64 Encoding & Performance in Web

Feb

Base64 encoding increases filesize in ways that we can’t effectively mitigate (e.g. Gzip). This increase in filesize delays rendering, because it’s happening to a render-blocking resource. Base64 encoding also forces non-critical assets onto the critical path. (e.g images, fonts) This means that—in this particular case—

2024

🗑YAGNI: Soft Delete

Jan

You might think you need soft delete and that is a cool feature. Yes, it is cool feature but there tricky and hard parts of it like: * Code leakage - you need to remember filter on reverse relationships * Losing foreign keys - ForeignKey won't be properly cascade deleted

2024

🐳 Optimizing Python application's Docker image with strip

Jan

Docker image can be optimised by removing shared library size: find /usr/local/lib/python3.11/dist-packages/ -name "*.so" | xargs strip

2023

🎸 ModelChoiceField to_field_name doesn't work if it's different from the model field's to_fieldDjango

Oct

Source from Django ticket To avoid that issue I have to provide initial for forms of that object.

2023

🔍 JetBrains ScopeGitHub

Oct

About JetBrains Scope from article which I can use If I want to search Python application code in Django projects, excluding unit tests, database migrations and Django admin site code. Here is the custom scope: file:.py&&!file:/tests//&&!file:/migrations//&&!file:/admin.py

2023

🪀 GitHub Code SearchGitHub

Oct

* You can add NOT is:fork to exclude forks (source). TBD

2023

🌐 HTTP Strict Transport Security (HSTS)Programming

Sep

In ongoing project our SEO-team asked about investigating redirect from http links to https with status code 307. They asked to investigate it. So what I did is check via Chrome to confirm that status is 307 - confirmed✅ Then checked via curl: HTTP/1.1 308 Permanent Redirect Date:

2023

🏗 Add support for htmx in PyCharm using web-typesProgramming

Sep

Grab the #htmx web-types from the repo to get auto-completion and docs. Web-types: https://github.com/bigskysoftware/htmx/blob/master/editors/jetbrains/htmx.web-types.json How to use it: https://github.com/JetBrains/web-types#web-types Original source: X (ex-Twitter) Additional link: Maximizing Productivity: PyCharm and htmx Integration

2023

🇨🇭 swiss army knife container imageProgramming

Sep

While building a "swiss army knife container image" might seem like a good idea, there are always more things to add and at some point, such image becomes too big and too hard to maintain. A better option is to use an image such as infuser. infuser is

2023

🍏 List of useful Quick Look plugins for developersmacOS

Aug

Just found a link. Already installed in my Mac :)

2023

🏓 gpingProgramming

Jul

Ping, but with a graph. ping on steroid 💪 * a time graph is plotted in the console * you can ping several hosts at once and visualize the differences * you can measure command execution time

2023

🚇 Cloudflare TunnelProgramming

Jul

A good alternative to ngrok. To install cloudflared run: brew install cloudflared And then cloudflared tunnel --url http://localhost:8080 to start a free tunnel.

2023

🍏 Quick Look + Open selected itemmacOS

Apr

In Finder, you can select an item and press Space bar to open almost any type of file to preview it. Then that file can be opened with shortcut Command–Down Arrow to open the selected item.

2023

💣 requests calls without timeoutsPython

Mar

Not specifying a timeout argument can lead to a process hanging indefinitely, which may lead to a denial of service situation.