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this post was submitted on 07 Apr 2026
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Pfffft….
Amateurs!
Big guy with a club:
Josuttis's books are normally pretty good, lots of examples and a clear explanation of why you might want to use something, but oof that looks akin to a kick in the essentials.
Even if you've no other reason to update to C++20, the fact that if constexpr gets rid of half the things you'd previously need to use SFINAE for, and concepts gets rid of the other half, makes it well worthwhile. Amazing how much it stops hurting when you stop doing ridiculous things.
C++ 20? I had to learn and do template metaprogramming on gcc 4.8 😭😭😭
The book is a good book though.
I see someone finally embraced the fact that C++ templates are Turing-complete and you don't really need much of the rest.
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My dad's grade 4 teacher used to clobber him real good with a Bible whenever he did normal kid stuff, the Bible can definitely make you cry.
For anyone who doesn't know, this is what linear algebra looks like
y = mx + b
It's algebra. It's linear. 😬
No way, dude. Thats affine, not algebra, and not linear. Its a lie meant to divide us.
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I solved it. Answer hotdog
Is this how Costco keeps their hotdog combo so cheap?
That and the threat of the CEO going full Patrick Bateman on the board.
you got to use numbers? i'm so jealous. we had to use matrices of variables when i learned it
For me the variables made it a bit easier
That's not a fair example, I know what linear algebra is but can't tell what's going on.
Change of basis would be my guess, but that's pretty basic.
You could've provided something far worse, like a manual construction of the Jordan normal form of a large matrix.
It's been more than a handful of years since I had to learn linear algebra so I am very out of practice, and this was the first image that I saw that made me go, "yeah, that looks about right." I thought I should include some image since I have told people during college that I was in a linear algebra class and several had the same response of, "Really? I learned algebra in high school. Weren't you in calculas last semester?"
One time at work I was trying to work out a least-squares fit using linear algebra.
I have no background knowledge in linesr algebra, it felt like drawing a pentagram on the floor and chanting in backwards Latin.
EZ
I am a freak who really enjoys linear algebra. It's actually quite heartening to discover that even amongst my friend group of weirdos, there are still freaks
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Oh, The Kittel... one does not survive ethically to solid state physics
This book...I read the whole thing, did most of the problems, and still don't know a thing about abstract algebra.
Ew Java
Flowers for Algernon
Where the Red Fern Grows
Java is neat: you just get what you write. There are things that really makes you cry and Java is not among them
Just make the 200 line boiler code setup to make some
system.stuff.thingy.log.println("hello world");
Then it's not compatible with the installed vm.
Then it's not compatible with the installed vm.
This almost never happens, unless you do very niche things or have unrealistic expectations from your file system.
Niche things include using obsolete cyphers for net communication or running java code on the ibm mainframe, not something you do day to day.
Java has changed a lot since Java 8. Here's a 3-line HelloWorld.java compatible with Java 21+:
void main() {
System.out.println("Hello, World!");
}
you just get what you write.
Every language is like that
It makes me cry when modded minecraft uses 100% of my CPU and eats up 20gb of ram. (This is only a little bit java's fault)
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Java should not be used for game engine design. Stop-the-world events and poor shaders support do not help.
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JVM eats as much memory as you give it, so try playing with -Xmx param
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Fine langauage, terrible build tools
Is that why there's like 27 languages that are based on the same jvm?
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Everybody giving all these first year engineering books. Real engineers cry when they're doing their CCNA certification.
I actually did study for the CCNA and was primed to certify. I decided not to go that route and found myself in a Java class a couple years later. I now don’t use either of those things.
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Project Hail Mary legitimately made me cry there towards the end. I watched the movie afterwards and it wasn't nearly as impactful (and I have opinions about the movie, even tho it was decently good), but the book just kicked me in the chest.
I have that book on my bookshelf. It didn't make me cry nearly as much as some C++ books.
Lessons in chemistry
It didn't make me cry but the greatest book I ever read was A Short Stay in Hell by Steven L. Peck.
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