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THREAD🧵

The HTML Roadmap 🛣️

1. Understanding the full form of HTML
2. Anatomy of tags
3. HTML5 boilerplate
4. Heading and paragraph tags
5. ul, ol, li, tags
6. img, span tag
7. Table tags for layout
8. Form tags
9. Understanding of semantic elements
10. Basic attributes

If you're learning or planning to learn Web Development in 2021 then this thread is for you

🧵👇🏻

WHERE TO START? Front-end or Backend?

- Well this may be a debatable question but I would suggest you to start with front-end development

- It depends entirely on the individual but in my opinion, starting with front-end development has its advantages.

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WHY TO START WITH FRONT-END DEVELOPMENT?

- More visual content gives you an aesthetic vibe

- You can share your creations

- Easier to get feedback as you can show your webpages to any non technical person as well

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FUNDAMENTALS ARE IMPORTANT

- Don't rush! Spend some time on HTML, CSS and JavaScript. You can do pretty amazing things using these three languages

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- Make sure to learn and build some web pages using HTML and CSS before jumping onto JavaScript

- JavaScript is the backbone of web development, Don't rush to start with React/Angular/vue or any other front-end framework or library

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In my quest to write a fast IPv4+6 parser, I have written a slow-but-I-think-correct parser, to use as a base of comparison.

In doing so, I have discovered more cursed IP address representations that I was previously unaware of.

A thread!

We start out simple, with IPv4 and IPv6 in what I'll call their "canonical form":

192.168.0.1
1:2:3:4:5:6:7:8

Various specs call these "dotted quad", dot-separated fields each representing 1 byte; and "colon-hex", colon-separated fields each representing 2 bytes.

The first bits of complexity come from IPv6. In canonical form, common addresses would end up with long runs of zeros in the middle. So, "::" allows you to elide 1 or more 16-bit blocks of zeros:

1:2::3:4 means 1:2:0:0:0:0:3:4

Next up, for cursed historical reasons, IPv6 permits you to write the final 32 bits of the address in dotted quad form. Effectively, you can splat an IPv4 address onto the end of IPv6 addresses!

1:2:3:4:5:6:77.77.88.88 means 1:2:3:4:5:6:7777:8888

And of course, you can combine the two!

fe80::1.2.3.4 means fe80:0:0:0:0:0:102:304

Let's be clear about what @Google, @Apple & @amazon instantly destroying #Parler's ability to be the free-speech version of Twitter is. At its core, this is about the ability to freely communicate one’s thoughts to others — once considered a hallmark of "The American Way." 1/13

What Big Tech is doing is as if Ma Bell in 1973 (ask grandpa) decided what you're saying to a friend on a landline phone was “dangerous." So they cut off the line in the middle of the talk and then sent someone over to physically cut your phone line. That's Stasi shit. 2/13

I realize that a personal conversation is not the same as a public tweet, but the principle is the same. The company that "owns the wires" for your speec — and has special govt rules protecting them due to their position — cuts off your call due to what you are saying. 3/13

If this analogy doesn't work for you, imagine someone tackling and punching you for speaking on a soap box in a public park and then setting your soap box on fire. And the govt being OK with that in a country that has a First Amendment. Moving on ... 4/13

Big Tech shadow banned people for years to just do it "halfway." That way, they could continue to paint an increasingly thin patina on their original govt-protected pledge to promote the free exchange of thought. #freespeech 5/13

Chess may be a good analogy for explaining the difference between a descriptive model of reality and a generative model of reality.

A descriptive model of chess will describe the rules (i.e. initial setup, allowed moves, points per piece, objectives). This tells you how a chessboard might evolve and also narrows the combinations of realistic chess positions.

In contrast, a generative model involves the actual gameplay between competing players that follow the rules. It generates new styles and patterns. It establishes new strategies and tactics. It generates new openings, middle gameplay, and end game tactics.

A generative model is an evolutionary model that leads to emergent behavior. As a consequence, a master of chess is able to recall the layout of chess positions in a real game in an instant, yet is unable to remember pieces placed in random positions.

That is because causality is present in the movements of pieces in a chessboard. An intuitive system like the human mind is able to capture that causality as a means to understanding and recall.

(1) Let’s get one thing straight right now;

I was a mod on r/watchpeopledie.

Ive taken part in uncovering evidence of p3d0’s to reveal to LEO.

I have seen some *dark* sh*t in my day.

Unless you are used to it; you will NOT be able to handle “seeing the truth”. I promise ➡️

If you're interested in DB internals, stop what you're doing and watch @CMUDB Quarantine Talk from Nico+Cesar about @SQLServer's Cascades query optimizer: https://t.co/FCdsbHHEaD

Many talks this semester were good. This one is the best. My thread provides key takeaways

[6:50] Microsoft hired Goetz Graffe in the 1990s to help them rewrite original Sybase optimizer into Cascades. This framework is now used across all MSFT DB products (@SQLServer, @cosmosdb, @Azure_Synapse).

[14:43] The optimizer checks whether it has stats it will need before cost-based search. If not, it blocks planning until the DBMS generates them. This is different than other approaches we saw this semester where DBMS says "we'll do it live!" with whatever stats are available.

[21:05] Their Cascades' search starts small/simple and then they make decision on the fly whether to expand search based on the expected query runtime and performance benefit from more search.

[26:33] They explicitly have a property for Halloween Problem. Operators specify whether they protect from it and then optimizer ensures property is satisfied. This is mindblowing. I have never thought about using the optimizer for this but it makes sense.