The goal of this example is to understand when states and effects happen when changing between different routes that use the same component.
Behavior is follows:
- visit: localhost:3001/1
- click
count++. This makescount: 1 - click "2" to visit localhost:3001/2
- outcome: count is still 1
This is likely because in React the state kept in the virtual DOM structure, and identical structure implies identical state. So when we change from post 1 to 2, we still have a
Post object, and state is unchanged.Next if we click:then the count is back to 0. This is because we changed the
- "Index" to go to localhost:3000
- "1" to go to localhost:3001/1
Post object in the DOM to Index and back, which resets everything.This example also illustrates how to prevent this from happening with
useEffect.Failed attempt at minimizing nodejs/next/ref-twice outside of Next.js.
Very good documentary!
This is a documentary about Gilberto Gil going back to his homelnd for the first time since he emigrated to Salvador/Rio, with some of his most popular songs intermixed into it. Beautiful!
Of particular note is the Video "Lamento Sertanejo scene from the 2002 documentary Tempo Rei".
Because they interact weakly with matter and mostly just escape out of nuclear reactors, you can likely locate all nuclear reactors on Earth by measuring neutrino flows:The CIA must love that shit, they must have had it years prior to this public paper.
Oppenheimer's Gamble by Welch Labs
. Source. Fails to mention Plutonium-240 as the source of the problem.- youtu.be/W06g7gIfwRE?t=252 cool to learn that the explosive lenses had to be made out of two different types of explosives, slow and fast, to be more symmetrical
Is there nothing standardized besides just raw images?
E.g. www.nist.gov/system/files/documents/2021/02/25/ansi-nist_2007_griffin-face-std-m1.pdf from 2005 by NIST says:so comparing it to fingerprint file formats such as ISO 19794-2. Sad!
Specify face images because there is no agreement on a standard face recognition template - Unlike finger minutiae ...
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 3. Visual Studio Code extension installation.
Figure 4. Visual Studio Code extension tree navigation.
Figure 5. Web editor. You can also edit articles on the Web editor without installing anything locally.Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.Video 4. OurBigBook Visual Studio Code extension editing and navigation demo. Source. 
- Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact