Ep 020: Unicode Code Points and UTF-8 Encoding

In this lesson, we introduce Unicode code points and one of the most common ways to encode them - UTF-8. We then show how 1-, 2-, 3-, and 4-byte UTF-8 encodings work and how we can encode our values to one of them.

Take aways: At the completion of this lesson, each student should be able to:
• explain what a Unicode code point is,
• represent a given Unicode code point,
• explain the relationship between Unicode code points and UTF-8 encoding, and
• encode a Unicode code point in UTF-8.

#utf8 #unicode #encoding

[_vehicle]

Aw man! You are awesome! I study computer science and I had to write a program that decodes signs to their unicode representation... Script from my lecturer was sa complicated and unclear... I spent a lot of hours trying to write this program and suddenly I found your channel, and I understood the most of the material in a little more than 20 minutes (including pauses). You are awesome teacher!

[dubshelb]

This video finally helped me grasp this topic. You explained this far better than my computer science professor did :) thank you!

[kennyhuang]

I am leaving this comment since this helped me during my first year of college majoring in CS. Thank you.

[vinodcs]

Read many articles but concept became clear for Unicode and UTf-8 after watching this video. Thanks you very much, Appreciate it.

[mrx-qith]

I'm so lucky i found this channel, thank u

[trayfor]

Thank You! This was extremely helpful. I struggled to find resources that explained it as proficiently and eloquently as you.

[lorensims]

7 bit for ASCII let them use the eighth bit for parity checking. They could a 1 or 0 to that eighth bit to make the bit count always come out even (or odd depending on the local standard). If a byte came through that did NOT have an even bit count it was clearly in error.
It was a very useful feature back in the day.

[syedtafhimshams]

Thank You! This was extremely helpful.

[tymothylim]

Thank you very much for this video! It was very interesting and educational for me! :)

[ssangkal]

Wait, he is writing stuff in flipped horizontally?!!?
Btw, great video .thanks

[rubinanazir]

i am confused.
A represent 41???
9:18

[ayys_habu]

I am confused regarding 11:55

Shoudn't it be 128 to 2175(2047+128)?

[yanchaoli]

for 4 bytes utf-8 encoding, total available length is 21-digits, which goes to 0x1F FF FF, why the unicode codepoints ends at 0x10 FF FF, what happens to the entire nibble?

[salvadorestrella]

This is a great presentation! thank you. Let me know if you need help to sell that blue meth