#Tcl #crashCourse
See also:
- catch <https://www.tcl.tk/man/tcl/TclCmd/catch.html>
- dict <https://www.tcl.tk/man/tcl/TclCmd/dict.html>
- error <https://www.tcl.tk/man/tcl/TclCmd/error.html>
- open <https://www.tcl.tk/man/tcl/TclCmd/open.html>
- regexp <https://www.tcl.tk/man/tcl/TclCmd/regexp.html>

#crashCourse
Finally on file handling <https://www.tutorialspoint.com/tcl-tk/tcl_file_io.htm> I had been waiting for!

#crashCourse
#Tcl is full of #context #magic. Syntax introduced as a construction of a string ("{anX orY}") behaves differently based on context, "if" test expression; in a "proc" signature, setting the default value.

#BlackMastodon #BlackFedi #USHistory #BlackHistory

Quick update on the #CrashCourse in #BlackAmericanHistory that I recently restarted. (I'm guilty of starting, getting distracted, forgetting about it and then restarting. ) This time around I have it scheduled and watch at least 3 at a time.

Anyway, I'm happily moving through the course and learning so much. I realize now that I had a good overview but was lacking specifics. Clint Smith is doing a great job of connecting it all.

#BlackMastodon #BlackFedi #AmericanHistory

The resistance to teaching #BlackAmericanHistory is not new. It wasn't part of the curriculum when I was a child in segregated southern schools in the 60s and 70s. I have learned a lot outside of the classroom over time but I'm looking forward to the #CrashCourse taught by Clint Smith. (51 videos, ~ 10-15 min ea.) I started yesterday. You can start today!

The Transatlantic Slave Trade: Crash Course Black American History
https://youtu.be/S72vvfBTQws

Mentioned #StudyHall and #CrashCourse to my fellow community college learning specialists today and they were so excited. The study hall math class is gonna help some of our students who struggle the most with math and crash course science will help both our students *and* some of my colleagues' kids!

NBC News: "Hank and John Green launch program that allows people to earn college credit with YouTube courses"

It's times like these I'm so proud to be a part of this community 💖🙅🏻‍♀️

#DFTBA #Nerdfighter #Nerdfighteria #VlogBrothers #JohnGreen #StudyHall
#college #AlternativeEducation @hankgreen #CrashCourse

https://www.nbcnews.com/news/hank-john-green-study-hall-crash-course-youtube-rcna67412

@hankgreen announced today that in partnership with #YouTube and #ArizonaStateUniversity, #CrashCourse's new series "Study Hall" will offer the ability to earn #collegeCredits which once earned can be used at any #college that accepts credits from #ASU!! There are (4) seven week classes available now, with 12 planned by Jan. 2025. At $25 for registration and $400 for the credits, the cost is considerably lower than even community college.

https://gostudyhall.com/

#DFTBA #VlogBrothers

E30: The World Wide Web

URL: Uniform resource locator

HTTP: Hypertext transfer protocol

HTML: hypertext markup language, created to add hypertext elements to plain text files so they could use HTTP, first created in 1990.🤯

#ComputerScience #CrashCourse #StarTrek #Worf

E28 Computer Networks

MAC = Media Access Control, created to provide unique address for a computer on a Local Area Network

Exponential backoff: computers add exponentially increasing wait time to minimize data collisions

Packet switching was created to be fault tolerant responding to the nuclear threat of the Cold War.

#ComputerScience #CrashCourse

E26 Graphical User Interface

WIMP paradigm = “windows, icons, menus, pointer”

Event-driven programming: programs open and run on demand, adds “click events” to code

Desktop metaphor came to be in 1960s

Terms draw, cut, and paste came from Xerox

#CrashCourse #ComputerScience

E22 Command Line Interfaces

Ah, memories of SSHing into the Beowulf cluster in grad school…

HILT = human in the loop

The QWERTY keyboard layout has been around for 150+ years

You can download Zork to play on modern computers thru the command line!

#ComputerScience #CrashCourse

E21 Compression

“That might sound like magic, but it’s actually Computer Science.”

run-length encoding: eliminate redundant data by adding run-length info for repeated data

lossless compression: compacted repression is same as original

Huffman tree: uses frequency blocks to create code dictionary, each path down the tree is unique

lossy compression: selectively removes data from regions of spectrum we don’t perceive or perceive well, uses psychophysics

#ComputerScience #CrashCourse

E15 File Systems
It’s all just 1s and 0s.
Ah, right root directories and metadata!
And defragging! I wonder if that is happening more in the background now in MacOS? Seems like I never have to manually defrag anymore.

#CrashCourse #ComputerScience

From vacuum tubes to transistors, punchcards to programming languages, plus Boolean algebra, logic gates (!), memory, machine code… I’ve learned so much this morning watching #CrashCourse #ComputerScience videos 1-14. #ForeverCurious #WinterBreak

Hi! This is me shouting into the void to any nerdfighters leaving the bird app and trying out Mastodon.

We are here and want to find you!

We're also happy to help you figure this out and answer questions! DFTBA!!

#DFTBA #NerdFighter #NFTtwt #NFTwt #NerdFighteria #DHAJ #JohnGreen #HankGreen #P4A #VlogBrothers #CrashCourse #SciShow #Complexly

Good Morning. Is it winter break yet? No? Okay. Here are some cats for #KittyTime

I made a little hat for my DND friend's birthday. I tested the one for his rat (fake) out on the girls.

Monday mornings are ass, so give yourself the best possible chance today. Hydration, patience, and #DFTBA, my friends.

#NerdFighter #NFTtwt #NFTwt #NerdFighteria #DHAJ #JohnGreen #HankGreen #P4A #VlogBrothers #CrashCourse #SciShow #Complexly #CatsOfMastodon #CatPics

I guess it's time for an #introduction post!

I've been a Nerdfighter for around 12 years after getting into #CrashCourse then #Vlogbrothers during my PhD. I've read some of John's books and all of Hank's and met both of them (they're both so tall!)

I have a #PhD in #MRI but I'm a lapsed academic who is now working in industry on #software testing, not magnets.

I'm from the UK, so I love tea (of course)