@Zacharee1 we've got something in common.

Let's procrastinate together.

Look how interesting that wall there behind you suddenly is...

I'm procrastinating by trying to figure out what does determinant of a matrix actually mean

Should be doing homework, but instead I'm wondering about the math stuff

I........ am so badly tempted to start learning Node.

I think I finally found a project that Node makes sense for.

@Serg So what does it mean? That's exactly what I should learn currently...

@ByteCommander that's the problem - nobody seems to have a clear definition of a determinant. There's plenty of rules on how to find the determinant, but I can't seem to find the why

Seth has gone poof

Setha LePouf

Ooooh . . . interesting . . . So apparently it's the "area" or "volume" of a matrix . . . or rather of the figure that is formed by row vectors . . .

I think determinant is interesting on linear operator : you can take the matrix of this operator in any basis and the determinant will always be the same

Hi!

Woh linear algebra seems so far to me ^^

Algebra! I love it!

Intersting, and what do you mean by the linear operator ?

I have to go!

Bye!

>> det([0,2;2,0])

ans =

    -4

One vector going up 2, another going right 2 . . . area of the parallelogram that they form is the determinant

$ git log
commit 02fd5c7e89145c4615e1d037ff325558039abfa0
Author: Tomster <tomster@emberjs.com>
Date:   Tue Jan 31 14:20:03 2017 -0800

    Initial Commit from Ember CLI v2.11.0

                                                            _...,
                                                         ,:^;,...;
                  -+===;.         ,,--++====++-,,,     .:  /.....,
                :::::~+++++#:,+#++++++++++++++++++#*..:   /,......
               (,,,,,,::=+++##++++++++++++++++++++++#.   :....../

O_O

That's an interesting commit message...

Um . . . Freaking awesome, but absolutely redundant . . .

OK, enough Matlab for now

why do you learn matrix and determinant ?

I'm an electrical engineering student, and right now taking class about electromagnetic fields. So, for that we need to deal with vectors , matrices, and some calculus

ok

 ________________
< Algebra! Burn! >
 ----------------
                       \                    ^    /^
                        \                  / \  // \
                         \   |\___/|      /   \//  .\
                          \  /O  O  \__  /    //  | \ \           *----*
                            /     /  \/_/    //   |  \  \          \   |
                            @___@`    \/_   //    |   \   \         \/\ \
                           0/0/|       \/_ //     |    \    \         \  \

Lol . . .

(if anyone wonders, it's cowsay -f dragon-and-cow 'Algebra! Burn!')

I think it really really depends on the professor. There's apathetic professors - they don't care about your learning. Fine. But there's also those who make it difficult. You ask something, and they don't exactly explain it, and if anything worse - they can make you hate the subject.

in maths, I learned Matrix as representation of linear operator on a certain basis

There must be interest and passion towards the subject. Otherwise learning becomes mindless repetition without any sensible purpose or meaning

true, so true

Unfortunately interest and passion do neither grow on trees nor can you buy them packaged anywhere.

Yep, and this is one of the things that makes us humans

Is that a good thing?

@ThomasWard Thanks it's working well for me i just need the int(delta_minutes) .. so now i am executing it like:

at -f /home/bg/Scripts/sc_play_music.sh now +python sc_amount.py minutes

and it's working perfect

`python sc_amount.py`

i mean with ` `

@ByteCommander it is . . . although it's for a far larger philosophical debate, we can just say that interest and passion are something that drives us to excellence . . . or at least certain level of proficiency . . . and it makes the experience of acquiring a skill that much more enjoyable.

Machines , at least right now, don't care - we give them code, they execute. No need for interest. No need for preferring something or liking something. They just do.

Welp, my laptop is running out of battery. Maybe I'll go take a break and have coffee. Interesting afternoon. Less productive that I hoped it would be

And probably because I got side-tracked into figuring out the determinant

Yeah, but isn't the lack of interest more common nowadays than the other way round?

Anyway, have a nice coffee.

Going to find some sleep soon. So seeya.

Lack of interest isn't the problem. Problem is with discovery and presentation of the materials, I think. Besides , interest isn't a scalar value, not exactly something we can quantify ( although we can try to do so in hours spent on a task).

I wasn't much interested in programming till I discovered Ubuntu

Once that happened, my interest started growing. Something that once used to be a chore just to pass another class, now became something I enjoy and am addicted to

OK, enough philosophy

@Benny You can change 60.0 to 60 and get the same way

since you were nonspecific I decided to just give you the decimal value :P

(you didn't specify you needed int.)

but i'm glad it helped :)

@Serg I agree up to a point I guess. I'm not sure if it's our modern world environment that just doesn't stimulate curiosity on most people, but it's not everyone that would grow the same interest in a subject even if it's presented the same way

Just completed my 1000th FP review.

awaiting gold badge coming in

"I'm sorry, @ByteCommander, but I'm afraid I can't give you a badge..."

Well, it's not like I would need you to get it... :P

ducks, runs

@IanC Well, true, there's no silver bullet, and no unifying method for everyone. I just think in modern education system there's lack of teachers that make material exciting and care about it

@Serg thanks, Obama

I can't tell how many times i had to say " Why does a 5 minute YouTube video exlain better that my PhD professor ?" and then see same thing said by others in comments

@Zacharee1 derp, Obama

Because professors have tenure and don't need to actually teach to keep their jobs

And TAs are still learning, and not how to be teachers

askubuntu.com/help/badges/126/steward?userid=367990 hehe @ThomasWard

That . . . and also because they don't necessarily care about the material

@Serg Agreed! Even though there are lots of people that wouldn't be interested even with good teachers, I agree that education system has lots of flaws on that regard

@ByteCommander lol, @Zanna's there like 20 times

But when you get that awesome teacher it's worth a million youtube video !

@Lordofdark did you manage to use Gtk/Glib for keyboard input on Python?

No, I followed another solution in a post linked by Serg, something like 'python mypython <(tail -f myfile)' so i can still read keyboard input on stdin

Then some other bugs appeared, I got tired of it and I stopped

I'll see tomorrow if Gtk/Glib is a better idea ^^

hey, @ThomasWard, a challenger appears.

@Zacharee1 which is stupid because I pay to be taught, and I expect the instructor to do it well.

@Lordofdark I just realized, I'm not sure how you'd be able to use the Gtk key-press-event without a window, maybe you can set it invisible?

@Seth well RIP

@Seth did ya listen

no

More pukey funtime! :P

Plos

Baby sitting my nephew... GROSS!

You know what's actually gross?

Having to deploy a PHP API endpoint to your server to transform a GET from a certain service into a POST back to that service's API because they don't let me change a value.

Hue

anyone here a bit familiar with linux kernel TCP/IP implementation?

I've a small doubt, out of curiosity: I had noticed when an IP packet is sent with an identification field of 0, the kernel seems to fill it up with some random number (and updating the checksum), while any other number is kept untouched

but I didn't find any reference talking about this behavior, though it seems useful

found two new flavors i like

jalapeño potato chips and greek veggie wrap

@KazWolfe Except you know the true Evil, so let's not make it a challenge.

@Zacharee1 heh nawww I just got my steward badges recently, so they're at the top. Long way to go for the late answers and reopen votes!

@Seth you should also look up Scott Bradlee's Postmodern Jukebox.

I figured what was happening with the IP identification field:

              ┌───────────────────────────────────────────────────┐
              │IP Header fields modified on sending by IP_HDRINCL │
              ├──────────────────────┬────────────────────────────┤
              │IP Checksum           │ Always filled in           │
              ├──────────────────────┼────────────────────────────┤
              │Source Address        │ Filled in when zero        │
              ├──────────────────────┼────────────────────────────┤
              │Packet ID             │ Filled in when zero        │

:)