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Day[9].tv Daily - Page 639

Forum Index > SC2 General
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Edowyth
Profile Joined October 2010
United States183 Posts
October 20 2010 03:07 GMT
#12761
On October 20 2010 12:06 Ryalnos wrote:
Hahahaha! Who knew that a simple joke from Day[9] would spawn such ridiculosity (this debate above is cute and all, but wtf).


Easily amused, much?
"Q. How do I check a valid [e-]mail address? A. You can't, at least, not in real time. Bummer, eh?" /r/programming
Of course, you could just send them a validation email.
jalstar
Profile Blog Joined September 2009
United States8198 Posts
October 20 2010 03:08 GMT
#12762
On October 20 2010 12:01 Edowyth wrote:
Show nested quote +
On October 20 2010 11:57 jalstar wrote:
On October 20 2010 11:48 Edowyth wrote:
On October 20 2010 11:43 jalstar wrote:
On October 20 2010 11:36 Edowyth wrote:
On October 20 2010 11:31 jalstar wrote:
On October 20 2010 11:10 AzarIntrets wrote:
On October 20 2010 11:08 Killerbot wrote:
On October 20 2010 11:07 AzarIntrets wrote:
On October 20 2010 11:04 Vilonis wrote:
[quote]
Why is it not i?


Because it IS freakin i and not j


He is right, the square root of -1 is i because its an imaginary number that does not exist.


If it doesn't exist, how can you give it a name or assign a symbol to it?
[image loading]

User was warned for this post


Because it's incredibly useful. Take the equation e^(pi)i = -1, which has applications in differential equations which is used all over the place.


The interesting thing no one has mentioned is that j (i, whatever) _isn't a number_! It's actually a constant (ie a name for a specific value). Saying it is a number is equivalent to me saying that MAX_INT is a number...because, after all, MAX_INT = 2^31 - 1...


z = x + iy is called a number, so z = 0 + 1i = i would be a number. That's the complex analysis treatment anyway, not sure about engineering.


nope...z is representative of a complex number....a real number plus a real number times the square root of negative one: z is a NAME not a number it's like saying a box is a space: A box contains a space, it can be thought of as representative of the space it contains; however it is not a space.


Where are you even getting this from? I just checked my textbook and none of what you're saying is in there.


THINK about it...you're a person...named (presumably) Jalstar. Jalstar is not a person...it's a NAME. The physical body everyone knows as Jalstar is a person....yet 'Jalstar' isn't. It's not that hard a concept. Drop the diff eq book and read about the difference between a pointer and an object...a variable and a value...a constant and the value it represents.


Complex Analysis book, and it's not uncommon at all for math, computer science, and physics to have different approaches to the same things.

Just checked a few more textbooks as well as Wikipedia and universal consensus seems to be that i is a number. It's your word against the world's.
Edowyth
Profile Joined October 2010
United States183 Posts
Last Edited: 2010-10-20 03:13:21
October 20 2010 03:12 GMT
#12763
On October 20 2010 12:08 jalstar wrote:
Show nested quote +
On October 20 2010 12:01 Edowyth wrote:
On October 20 2010 11:57 jalstar wrote:
On October 20 2010 11:48 Edowyth wrote:
On October 20 2010 11:43 jalstar wrote:
On October 20 2010 11:36 Edowyth wrote:
On October 20 2010 11:31 jalstar wrote:
On October 20 2010 11:10 AzarIntrets wrote:
On October 20 2010 11:08 Killerbot wrote:
On October 20 2010 11:07 AzarIntrets wrote:
[quote]

Because it IS freakin i and not j


He is right, the square root of -1 is i because its an imaginary number that does not exist.


If it doesn't exist, how can you give it a name or assign a symbol to it?
[image loading]

User was warned for this post


Because it's incredibly useful. Take the equation e^(pi)i = -1, which has applications in differential equations which is used all over the place.


The interesting thing no one has mentioned is that j (i, whatever) _isn't a number_! It's actually a constant (ie a name for a specific value). Saying it is a number is equivalent to me saying that MAX_INT is a number...because, after all, MAX_INT = 2^31 - 1...


z = x + iy is called a number, so z = 0 + 1i = i would be a number. That's the complex analysis treatment anyway, not sure about engineering.


nope...z is representative of a complex number....a real number plus a real number times the square root of negative one: z is a NAME not a number it's like saying a box is a space: A box contains a space, it can be thought of as representative of the space it contains; however it is not a space.


Where are you even getting this from? I just checked my textbook and none of what you're saying is in there.


THINK about it...you're a person...named (presumably) Jalstar. Jalstar is not a person...it's a NAME. The physical body everyone knows as Jalstar is a person....yet 'Jalstar' isn't. It's not that hard a concept. Drop the diff eq book and read about the difference between a pointer and an object...a variable and a value...a constant and the value it represents.


Complex Analysis book, and it's not uncommon at all for math, computer science, and physics to have different approaches to the same things.

Just checked a few more textbooks as well as Wikipedia and universal consensus seems to be that i is a number. It's your word against the world's.


No it's not...my complex book says i is a number too: it's talking about (-1)^(1/2) whereas I'm talking about the difference between that and the character drawn with a vertical line below a small dot with a little bit of space.

Is Pi a number? Or is it representative of 3.14159...?

And it seems you believe that texts are always correct: wow, I love that the sun circles the earth.
"Q. How do I check a valid [e-]mail address? A. You can't, at least, not in real time. Bummer, eh?" /r/programming
Of course, you could just send them a validation email.
ApBuLLet
Profile Joined September 2010
United States604 Posts
Last Edited: 2010-10-20 03:31:23
October 20 2010 03:13 GMT
#12764
Thank you for reviewing my replay Day[9]! I'll have to rewatch it as I didn't really catch everything since my internet sucks at school... Hey and just so everyone knows, it is pronounced A.P bullet :p (AP are actually my initials) haha. No hard feelings though ^^. Once again thanks!

On October 20 2010 12:20 KingRajesh wrote:
The purpose of the drop is to lose the whole effing army.


Aparrently not :p haha. Honestly I dropped in that game because I knew he had Colossi and I didn't know what else to do... so I figured I would try it. I ALWAYS lose to Colossi. Looks like I will be sending a replay in for the next Newbie Tuesday too!
KingRajesh
Profile Joined July 2010
United States927 Posts
Last Edited: 2010-10-20 03:21:40
October 20 2010 03:20 GMT
#12765
The purpose of the drop is to lose the whole effing army.
"Zerg are the absolute worst thing that can happen to your day" - Dustin Browder
Triscuit
Profile Blog Joined April 2010
United States722 Posts
October 20 2010 03:21 GMT
#12766
On October 20 2010 12:01 Edowyth wrote:
Show nested quote +
On October 20 2010 11:57 jalstar wrote:
On October 20 2010 11:48 Edowyth wrote:
On October 20 2010 11:43 jalstar wrote:
On October 20 2010 11:36 Edowyth wrote:
On October 20 2010 11:31 jalstar wrote:
On October 20 2010 11:10 AzarIntrets wrote:
On October 20 2010 11:08 Killerbot wrote:
On October 20 2010 11:07 AzarIntrets wrote:
On October 20 2010 11:04 Vilonis wrote:
[quote]
Why is it not i?


Because it IS freakin i and not j


He is right, the square root of -1 is i because its an imaginary number that does not exist.


If it doesn't exist, how can you give it a name or assign a symbol to it?
[image loading]

User was warned for this post


Because it's incredibly useful. Take the equation e^(pi)i = -1, which has applications in differential equations which is used all over the place.


The interesting thing no one has mentioned is that j (i, whatever) _isn't a number_! It's actually a constant (ie a name for a specific value). Saying it is a number is equivalent to me saying that MAX_INT is a number...because, after all, MAX_INT = 2^31 - 1...


z = x + iy is called a number, so z = 0 + 1i = i would be a number. That's the complex analysis treatment anyway, not sure about engineering.


nope...z is representative of a complex number....a real number plus a real number times the square root of negative one: z is a NAME not a number it's like saying a box is a space: A box contains a space, it can be thought of as representative of the space it contains; however it is not a space.


Where are you even getting this from? I just checked my textbook and none of what you're saying is in there.


THINK about it...you're a person...named (presumably) Jalstar. Jalstar is not a person...it's a NAME. The physical body everyone knows as Jalstar is a person....yet 'Jalstar' isn't. It's not that hard a concept. Drop the diff eq book and read about the difference between a pointer and an object...a variable and a value...a constant and the value it represents.


I honestly think it's pedantic, and you're very excited about being a programmer or something, but I'll go on with your argument. When you initialize a variable, you start off with, say

int i = 5;

Which is calling "i" an "integer" because it is entirely equivalent and interchangeable with the value 5. Technically by your determination, "5" is not a number either, it is an Arabic symbol representing the conceptual idea of "5."

Can you see how this can get out of control? Something that is a pointer to an object is still a number also, but the meaning of the number is an address, instead of a value.
jalstar
Profile Blog Joined September 2009
United States8198 Posts
Last Edited: 2010-10-20 03:24:32
October 20 2010 03:22 GMT
#12767
On October 20 2010 12:12 Edowyth wrote:
Show nested quote +
On October 20 2010 12:08 jalstar wrote:
On October 20 2010 12:01 Edowyth wrote:
On October 20 2010 11:57 jalstar wrote:
On October 20 2010 11:48 Edowyth wrote:
On October 20 2010 11:43 jalstar wrote:
On October 20 2010 11:36 Edowyth wrote:
On October 20 2010 11:31 jalstar wrote:
On October 20 2010 11:10 AzarIntrets wrote:
On October 20 2010 11:08 Killerbot wrote:
[quote]

He is right, the square root of -1 is i because its an imaginary number that does not exist.


If it doesn't exist, how can you give it a name or assign a symbol to it?
[image loading]

User was warned for this post


Because it's incredibly useful. Take the equation e^(pi)i = -1, which has applications in differential equations which is used all over the place.


The interesting thing no one has mentioned is that j (i, whatever) _isn't a number_! It's actually a constant (ie a name for a specific value). Saying it is a number is equivalent to me saying that MAX_INT is a number...because, after all, MAX_INT = 2^31 - 1...


z = x + iy is called a number, so z = 0 + 1i = i would be a number. That's the complex analysis treatment anyway, not sure about engineering.


nope...z is representative of a complex number....a real number plus a real number times the square root of negative one: z is a NAME not a number it's like saying a box is a space: A box contains a space, it can be thought of as representative of the space it contains; however it is not a space.


Where are you even getting this from? I just checked my textbook and none of what you're saying is in there.


THINK about it...you're a person...named (presumably) Jalstar. Jalstar is not a person...it's a NAME. The physical body everyone knows as Jalstar is a person....yet 'Jalstar' isn't. It's not that hard a concept. Drop the diff eq book and read about the difference between a pointer and an object...a variable and a value...a constant and the value it represents.


Complex Analysis book, and it's not uncommon at all for math, computer science, and physics to have different approaches to the same things.

Just checked a few more textbooks as well as Wikipedia and universal consensus seems to be that i is a number. It's your word against the world's.


No it's not...my complex book says i is a number too: it's talking about (-1)^(1/2) whereas I'm talking about the difference between that and the character drawn with a vertical line below a small dot with a little bit of space.

Is Pi a number? Or is it representative of 3.14159...?

And it seems you believe that texts are always correct: wow, I love that the sun circles the earth.


Wait you're talking about the letter i and not (-1)^(1/2)? As in, how was I supposed to have any clue you were being that semantic?

edit: what's the point of saying "i is not a number when it's not sqrt(-1)" anyway?
CaptainFwiffo
Profile Joined August 2010
United States576 Posts
October 20 2010 03:22 GMT
#12768
"Not insta-snap boneringly ahead." -- Day[9]
"Even though they don't drink milk, milk comes out of their nose, disturbingly." - Tasteless
midgettoes
Profile Joined June 2010
Australia180 Posts
October 20 2010 03:25 GMT
#12769
On October 20 2010 12:12 Edowyth wrote:
Show nested quote +
On October 20 2010 12:08 jalstar wrote:
On October 20 2010 12:01 Edowyth wrote:
On October 20 2010 11:57 jalstar wrote:
On October 20 2010 11:48 Edowyth wrote:
On October 20 2010 11:43 jalstar wrote:
On October 20 2010 11:36 Edowyth wrote:
On October 20 2010 11:31 jalstar wrote:
On October 20 2010 11:10 AzarIntrets wrote:
On October 20 2010 11:08 Killerbot wrote:
[quote]

He is right, the square root of -1 is i because its an imaginary number that does not exist.


If it doesn't exist, how can you give it a name or assign a symbol to it?
[image loading]

User was warned for this post


Because it's incredibly useful. Take the equation e^(pi)i = -1, which has applications in differential equations which is used all over the place.


The interesting thing no one has mentioned is that j (i, whatever) _isn't a number_! It's actually a constant (ie a name for a specific value). Saying it is a number is equivalent to me saying that MAX_INT is a number...because, after all, MAX_INT = 2^31 - 1...


z = x + iy is called a number, so z = 0 + 1i = i would be a number. That's the complex analysis treatment anyway, not sure about engineering.


nope...z is representative of a complex number....a real number plus a real number times the square root of negative one: z is a NAME not a number it's like saying a box is a space: A box contains a space, it can be thought of as representative of the space it contains; however it is not a space.


Where are you even getting this from? I just checked my textbook and none of what you're saying is in there.


THINK about it...you're a person...named (presumably) Jalstar. Jalstar is not a person...it's a NAME. The physical body everyone knows as Jalstar is a person....yet 'Jalstar' isn't. It's not that hard a concept. Drop the diff eq book and read about the difference between a pointer and an object...a variable and a value...a constant and the value it represents.


Complex Analysis book, and it's not uncommon at all for math, computer science, and physics to have different approaches to the same things.

Just checked a few more textbooks as well as Wikipedia and universal consensus seems to be that i is a number. It's your word against the world's.


No it's not...my complex book says i is a number too: it's talking about (-1)^(1/2) whereas I'm talking about the difference between that and the character drawn with a vertical line below a small dot with a little bit of space.

Is Pi a number? Or is it representative of 3.14159...?

And it seems you believe that texts are always correct: wow, I love that the sun circles the earth.


Lol this is ridiculous. i is a representation of a number. In the same way you would say "Edowyth is a person" you would say "i is a number." Stop being overly philosophical and in-depth on something that is completely irrelevant. If you talk to anyone who has ever done complex analysis and say "oh yeah thats just 4i" They will know what you mean. Similarly, if you say "oh that circle? It has circumference 7pi" they will know you mean 7*3.14....

Yes it's a label technically, but in common usage everyone knows you mean the number. So please end this debate lol.
LiQuidTalon
Profile Joined August 2010
United States14 Posts
October 20 2010 03:25 GMT
#12770
The Number J: http://i51.tinypic.com/rmlpwl.jpg
Edowyth
Profile Joined October 2010
United States183 Posts
October 20 2010 03:26 GMT
#12771
On October 20 2010 12:21 Triscuit wrote:
Show nested quote +
On October 20 2010 12:01 Edowyth wrote:
On October 20 2010 11:57 jalstar wrote:
On October 20 2010 11:48 Edowyth wrote:
On October 20 2010 11:43 jalstar wrote:
On October 20 2010 11:36 Edowyth wrote:
On October 20 2010 11:31 jalstar wrote:
On October 20 2010 11:10 AzarIntrets wrote:
On October 20 2010 11:08 Killerbot wrote:
On October 20 2010 11:07 AzarIntrets wrote:
[quote]

Because it IS freakin i and not j


He is right, the square root of -1 is i because its an imaginary number that does not exist.


If it doesn't exist, how can you give it a name or assign a symbol to it?
[image loading]

User was warned for this post


Because it's incredibly useful. Take the equation e^(pi)i = -1, which has applications in differential equations which is used all over the place.


The interesting thing no one has mentioned is that j (i, whatever) _isn't a number_! It's actually a constant (ie a name for a specific value). Saying it is a number is equivalent to me saying that MAX_INT is a number...because, after all, MAX_INT = 2^31 - 1...


z = x + iy is called a number, so z = 0 + 1i = i would be a number. That's the complex analysis treatment anyway, not sure about engineering.


nope...z is representative of a complex number....a real number plus a real number times the square root of negative one: z is a NAME not a number it's like saying a box is a space: A box contains a space, it can be thought of as representative of the space it contains; however it is not a space.


Where are you even getting this from? I just checked my textbook and none of what you're saying is in there.


THINK about it...you're a person...named (presumably) Jalstar. Jalstar is not a person...it's a NAME. The physical body everyone knows as Jalstar is a person....yet 'Jalstar' isn't. It's not that hard a concept. Drop the diff eq book and read about the difference between a pointer and an object...a variable and a value...a constant and the value it represents.


I honestly think it's pedantic, and you're very excited about being a programmer or something, but I'll go on with your argument. When you initialize a variable, you start off with, say

int i = 5;

Which is calling "i" an "integer" because it is entirely equivalent and interchangeable with the value 5. Technically by your determination, "5" is not a number either, it is an Arabic symbol representing the conceptual idea of "5."

Can you see how this can get out of control? Something that is a pointer to an object is still a number also, but the meaning of the number is an address, instead of a value.



...so you get the point yet you're arguing it? Wow.

By the way in that expression (presumably C or C++) int is not a declaration of i as an integer but as a variable of type integer...meaning that when the compiler sees the name i it knows that it can only be used in the way that a integer could...because after all is said and done i will be replaced by the number it _represents_.

That's the point...and the only reason for the post. It also happens to be the reason for the humor: Day[9] was tickled that he named a letter, not a number.
"Q. How do I check a valid [e-]mail address? A. You can't, at least, not in real time. Bummer, eh?" /r/programming
Of course, you could just send them a validation email.
Shnur
Profile Joined September 2010
Canada42 Posts
October 20 2010 03:28 GMT
#12772
Just watched my first live daily... sooooo amazing! thanks day9!
SCV's defy gravity.
Sirot
Profile Joined March 2010
48 Posts
October 20 2010 03:29 GMT
#12773
I want day 9's music. : <
Edowyth
Profile Joined October 2010
United States183 Posts
October 20 2010 03:31 GMT
#12774
On October 20 2010 12:25 midgettoes wrote:
Show nested quote +
On October 20 2010 12:12 Edowyth wrote:
On October 20 2010 12:08 jalstar wrote:
On October 20 2010 12:01 Edowyth wrote:
On October 20 2010 11:57 jalstar wrote:
On October 20 2010 11:48 Edowyth wrote:
On October 20 2010 11:43 jalstar wrote:
On October 20 2010 11:36 Edowyth wrote:
On October 20 2010 11:31 jalstar wrote:
On October 20 2010 11:10 AzarIntrets wrote:
[quote]

If it doesn't exist, how can you give it a name or assign a symbol to it?
[image loading]

User was warned for this post


Because it's incredibly useful. Take the equation e^(pi)i = -1, which has applications in differential equations which is used all over the place.


The interesting thing no one has mentioned is that j (i, whatever) _isn't a number_! It's actually a constant (ie a name for a specific value). Saying it is a number is equivalent to me saying that MAX_INT is a number...because, after all, MAX_INT = 2^31 - 1...


z = x + iy is called a number, so z = 0 + 1i = i would be a number. That's the complex analysis treatment anyway, not sure about engineering.


nope...z is representative of a complex number....a real number plus a real number times the square root of negative one: z is a NAME not a number it's like saying a box is a space: A box contains a space, it can be thought of as representative of the space it contains; however it is not a space.


Where are you even getting this from? I just checked my textbook and none of what you're saying is in there.


THINK about it...you're a person...named (presumably) Jalstar. Jalstar is not a person...it's a NAME. The physical body everyone knows as Jalstar is a person....yet 'Jalstar' isn't. It's not that hard a concept. Drop the diff eq book and read about the difference between a pointer and an object...a variable and a value...a constant and the value it represents.


Complex Analysis book, and it's not uncommon at all for math, computer science, and physics to have different approaches to the same things.

Just checked a few more textbooks as well as Wikipedia and universal consensus seems to be that i is a number. It's your word against the world's.


No it's not...my complex book says i is a number too: it's talking about (-1)^(1/2) whereas I'm talking about the difference between that and the character drawn with a vertical line below a small dot with a little bit of space.

Is Pi a number? Or is it representative of 3.14159...?

And it seems you believe that texts are always correct: wow, I love that the sun circles the earth.


Lol this is ridiculous. i is a representation of a number. In the same way you would say "Edowyth is a person" you would say "i is a number." Stop being overly philosophical and in-depth on something that is completely irrelevant. If you talk to anyone who has ever done complex analysis and say "oh yeah thats just 4i" They will know what you mean. Similarly, if you say "oh that circle? It has circumference 7pi" they will know you mean 7*3.14....

Yes it's a label technically, but in common usage everyone knows you mean the number. So please end this debate lol.


It's not ridiculous...you think about these things as the concepts that they are and you are empowered so much more than if you are just manipulating symbols. Tell a philosopher, or a preacher, that NAMES DON'T MATTER and you'll see that they do to many.
"Q. How do I check a valid [e-]mail address? A. You can't, at least, not in real time. Bummer, eh?" /r/programming
Of course, you could just send them a validation email.
BigfootCommentaries
Profile Joined October 2010
8 Posts
Last Edited: 2010-10-20 03:34:30
October 20 2010 03:33 GMT
#12775
[image loading]

Introducing the newest game by Blizzard Entertainment...Starcraft J!!
Funkatron
Profile Joined July 2010
United States725 Posts
October 20 2010 03:33 GMT
#12776
On October 20 2010 09:25 KamikazeRaider wrote:
Show nested quote +
On October 20 2010 06:25 PJA wrote:
On October 19 2010 22:09 KamikazeRaider wrote:
On October 19 2010 13:51 Funkatron wrote:
On October 19 2010 13:31 DreXxiN wrote:
How are people getting no free time, seriously I don't get it. Having a job/school and GF still lets you have free time unless it's like, finals week...

Either way I forgive day9, I mean he's a busy dude. lol

medical school is about 100 hrs/ week on a good week. That doesn't include having a family etc.

Some people reach a point in there life where "free time" doesn't exist. You give up one thing for another.

Edit: maybe more like 80


Then you need to get your damn priorities straight. If you are actually in med school, which I tend to seriously doubt, then maybe you shouldn't waste time playing a video game, or posting on a forum about video games, or scheduling your time around a webcast about video games.


LOL @ giving up your hobbies just because you're in medical school.

I'm sure you're going to be super fun and interesting when you grow up.

Isn't day[9] in grad school? Pretty sure he's still doing SC stuff a lot...


The implication was not that people should give up their leisure activities. My statement was meant to illustrate the idiocy of acting like a petulant child when your free entertainment doesn't come on when you think it should and use your lack of free time as a justification for acting like that.

I work long ass hours myself, and I don't have nearly the time that I'd like to have free. I understand the need to unwind and chill the hell out because you'd otherwise go insane and burn out. At the same time, Day9's workload is presumably far more demanding and he doesn't owe Funkatron or anyone else and explanation if he decides to cancel a daily. People saying that they're owed one are being obnoxious and childish.


1. Nobody said they were owed anything. That's kinda the point.
2. "If you are actually in med school, which I tend to seriously doubt, then maybe you shouldn't waste time playing a video game" - you

"The implication was not that people should give up their leisure activities." - also you
BigfootCommentaries
Profile Joined October 2010
8 Posts
October 20 2010 03:33 GMT
#12777
http://imgur.com/5wRPt
Duscha
Profile Joined July 2010
Germany42 Posts
October 20 2010 03:42 GMT
#12778
On October 20 2010 12:29 Sirot wrote:
I want day 9's music. : <


i just found this:

http://day9fan.com/day9playlist
Vilonis
Profile Joined October 2010
United States130 Posts
October 20 2010 03:43 GMT
#12779
On October 20 2010 12:26 Edowyth wrote:
Show nested quote +
On October 20 2010 12:21 Triscuit wrote:
On October 20 2010 12:01 Edowyth wrote:
On October 20 2010 11:57 jalstar wrote:
On October 20 2010 11:48 Edowyth wrote:
On October 20 2010 11:43 jalstar wrote:
On October 20 2010 11:36 Edowyth wrote:
On October 20 2010 11:31 jalstar wrote:
On October 20 2010 11:10 AzarIntrets wrote:
On October 20 2010 11:08 Killerbot wrote:
[quote]

He is right, the square root of -1 is i because its an imaginary number that does not exist.


If it doesn't exist, how can you give it a name or assign a symbol to it?
[image loading]

User was warned for this post


Because it's incredibly useful. Take the equation e^(pi)i = -1, which has applications in differential equations which is used all over the place.


The interesting thing no one has mentioned is that j (i, whatever) _isn't a number_! It's actually a constant (ie a name for a specific value). Saying it is a number is equivalent to me saying that MAX_INT is a number...because, after all, MAX_INT = 2^31 - 1...


z = x + iy is called a number, so z = 0 + 1i = i would be a number. That's the complex analysis treatment anyway, not sure about engineering.


nope...z is representative of a complex number....a real number plus a real number times the square root of negative one: z is a NAME not a number it's like saying a box is a space: A box contains a space, it can be thought of as representative of the space it contains; however it is not a space.


Where are you even getting this from? I just checked my textbook and none of what you're saying is in there.


THINK about it...you're a person...named (presumably) Jalstar. Jalstar is not a person...it's a NAME. The physical body everyone knows as Jalstar is a person....yet 'Jalstar' isn't. It's not that hard a concept. Drop the diff eq book and read about the difference between a pointer and an object...a variable and a value...a constant and the value it represents.


I honestly think it's pedantic, and you're very excited about being a programmer or something, but I'll go on with your argument. When you initialize a variable, you start off with, say

int i = 5;

Which is calling "i" an "integer" because it is entirely equivalent and interchangeable with the value 5. Technically by your determination, "5" is not a number either, it is an Arabic symbol representing the conceptual idea of "5."

Can you see how this can get out of control? Something that is a pointer to an object is still a number also, but the meaning of the number is an address, instead of a value.



...so you get the point yet you're arguing it? Wow.

By the way in that expression (presumably C or C++) int is not a declaration of i as an integer but as a variable of type integer...meaning that when the compiler sees the name i it knows that it can only be used in the way that a integer could...because after all is said and done i will be replaced by the number it _represents_.

That's the point...and the only reason for the post. It also happens to be the reason for the humor: Day[9] was tickled that he named a letter, not a number.


Well, it is really saying the assortment of 1s and 0s in some arbitrary order residing at the address of i is to be used as an int (as opposed to a float, or any other 4 byte data type), but yeah, the point is that Day[9] (day J) told a fail joke
"Such is the vastness of his genius that he can outwit even himself!" - Iskaral Pust, High Priest of High House Shadow
midgettoes
Profile Joined June 2010
Australia180 Posts
October 20 2010 03:46 GMT
#12780
On October 20 2010 12:31 Edowyth wrote:
Show nested quote +
On October 20 2010 12:25 midgettoes wrote:
On October 20 2010 12:12 Edowyth wrote:
On October 20 2010 12:08 jalstar wrote:
On October 20 2010 12:01 Edowyth wrote:
On October 20 2010 11:57 jalstar wrote:
On October 20 2010 11:48 Edowyth wrote:
On October 20 2010 11:43 jalstar wrote:
On October 20 2010 11:36 Edowyth wrote:
On October 20 2010 11:31 jalstar wrote:
[quote]

Because it's incredibly useful. Take the equation e^(pi)i = -1, which has applications in differential equations which is used all over the place.


The interesting thing no one has mentioned is that j (i, whatever) _isn't a number_! It's actually a constant (ie a name for a specific value). Saying it is a number is equivalent to me saying that MAX_INT is a number...because, after all, MAX_INT = 2^31 - 1...


z = x + iy is called a number, so z = 0 + 1i = i would be a number. That's the complex analysis treatment anyway, not sure about engineering.


nope...z is representative of a complex number....a real number plus a real number times the square root of negative one: z is a NAME not a number it's like saying a box is a space: A box contains a space, it can be thought of as representative of the space it contains; however it is not a space.


Where are you even getting this from? I just checked my textbook and none of what you're saying is in there.


THINK about it...you're a person...named (presumably) Jalstar. Jalstar is not a person...it's a NAME. The physical body everyone knows as Jalstar is a person....yet 'Jalstar' isn't. It's not that hard a concept. Drop the diff eq book and read about the difference between a pointer and an object...a variable and a value...a constant and the value it represents.


Complex Analysis book, and it's not uncommon at all for math, computer science, and physics to have different approaches to the same things.

Just checked a few more textbooks as well as Wikipedia and universal consensus seems to be that i is a number. It's your word against the world's.


No it's not...my complex book says i is a number too: it's talking about (-1)^(1/2) whereas I'm talking about the difference between that and the character drawn with a vertical line below a small dot with a little bit of space.

Is Pi a number? Or is it representative of 3.14159...?

And it seems you believe that texts are always correct: wow, I love that the sun circles the earth.


Lol this is ridiculous. i is a representation of a number. In the same way you would say "Edowyth is a person" you would say "i is a number." Stop being overly philosophical and in-depth on something that is completely irrelevant. If you talk to anyone who has ever done complex analysis and say "oh yeah thats just 4i" They will know what you mean. Similarly, if you say "oh that circle? It has circumference 7pi" they will know you mean 7*3.14....

Yes it's a label technically, but in common usage everyone knows you mean the number. So please end this debate lol.


It's not ridiculous...you think about these things as the concepts that they are and you are empowered so much more than if you are just manipulating symbols. Tell a philosopher, or a preacher, that NAMES DON'T MATTER and you'll see that they do to many.


"i" is simply a number represented by the label "i". Correct. Does that make you feel empowered? Really? When you realised that "john" is simply a person represented by the label "john" did you sit and mull over that, striking your best philosophical stance? Probably not. It's really not that "deep" or "empowering". What IS empowering, is using this number - and others like it - to work out interesting problems. What you may find "empowering" others realise without any form of care. It is just another name. Names, in mathematics, a scientific subject, bear no relevance but to represent numbers or concepts. How you use those numbers and concepts is what is interesting, not what they are called.
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