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12:41 AM
Ugh. After visiting four purported sporting/fitness goods stores and two department stores, I've seen approx 1000 models of treadmills, steppers, bikes, ellipticals, and ineffective-looking "ab-crunchers". Not a single damn one carries rowing machines.
I guess I should've just followed my first instinct and ordered one online. What a waste of time.
 
1:14 AM
@MartinBüttner In response to your recent flag on meta, haha, yes, I did. :P
 
 
2 hours later…
3:28 AM
Github rainbow!
 
 
4 hours later…
7:00 AM
0
A: Proposed Question Sandbox - Mark XIV

HackerCowCalculate the angle between clock hands Write a program or a function that takes a number of hours and a number of minutes as input (stdin, parameter,...) and returns (or prints) the degrees in the angle between the hour hand and the minute hand. Rules: You can write a working program or a fu...

 
7:35 AM
Ha, PokeBackBot did surprisingly well!
@Doorknob You changed the number of trials from 10 to 3? That seems quite punishing to submissions like FoolMeOnce (which was posted before your rule change)
 
 
1 hour later…
8:41 AM
Whoa, my most recent Youtube video has just 11 views and already 2 likes O_o
 
 
1 hour later…
9:56 AM
0
A: Proposed Question Sandbox - Mark XIV

ProgramFOXFind the mines! Tags: (code-challenge or king-of-the-hill?) algorithm You are a mine remover. Your job is to find all mines on a field, without a mine explodes. So, you write an application that can find the mines carefully. The input The input can either be provided through command line argu...

 
10:32 AM
0
Q: voting popularity contest

flawrI recently noticed that on many popularity contests the earlier answers get more upvotes than the ones that were submitted later. This effect is - I think - amplified by arranging the answers so that the most upvoted answers are displayed on top. On the one hand later submissions can use idea of ...

 
 
2 hours later…
12:52 PM
@Doorknob Is Unpredictable player 1? because 123 is the number of 1s (39) and -1s (84) combined in your out.txt
 
International air travel is having a rough time lately: reuters.com/article/2014/07/24/…
 
@plannapus Oh wow I am really bad at this
Fixing
There
(I had already changed \b$i\b to ^$i$; I just didn't rerun ./buildscores.sh)
 
No worries, everybody makes mistake :)
 
1:29 PM
@Geobits ugh, this year really isn't the best for people with latent fear of flying
 
I had a friend put off a trip after the missing flight earlier this year. I can only imagine how they're feeling now.
Still safer than driving a car, though :)
 
@Geobits I thought about this a lot recently... I haven't looked into any statistics, but I still wonder how reliable they are... are people actually comparing number of trips taken vs fatal incident for each method of transportation? because obviously less people die in plane crashes, but there also a lot less plane journeys undertaken.
 
It all depends on whether you evaluate per-trip, per-mile, per-hour, etc. I think planes are still safer by about any metric, but the exact number changes by what you measure.
 
en.wikipedia.org/wiki/Micromort#Additional is the classic statistic, I think
 
I'll be taking trains from now on
I'm also not gonna walk anywhere any more
 
1:43 PM
I'm an adrenaline junkie, I walk everywhere because I can't afford a bicycle.
 
lol, the german article contains another one: 6000 miles on a plane (cancer due to cosmic radiation)
 
One way to make sure life is short is to read crap like that and stress out about it
 
Different measures: en.wikipedia.org/wiki/…
 
that's a pretty need table
 
I wonder if it's even possible to be a developer and live to be over 100, given all the stress that comes with it
 
1:46 PM
By distance, the space shuttle is safer than walking :)
 
Wait, does being a space shuttle even count?
Because I rotate on the earth's surface 24,901 miles per day.
As soon as you leave the atmosphere, you aren't rotating anymore, so you should be measured differently
 
Both you and the shuttle are still moving in relation to the Earth's center of gravity.
 
@Geobits So airtravel is just safer because you can get further with less journeys. But just making a journey with a car is stastically less likely to get killed than stepping on a plane. (which I guess is due to the car thing counting loads of trips to the supermarket around the corner)
I'm pretty sure the earth's speed is negligible compared to a shuttle's speed
 
@MartinBüttner Something like that, yea. So if you're trying to decide whether to drive/fly to your next vacation spot, the safer choice is air.
Yea, I think a shuttle orbits at something like 8km/s.
 
the ISS makes it around the earth several times a day... I think if you're going to the moon, you'd be even faster
ISS, orbital period, 92.810 minutes
that is more than an order of magnitude faster
(than you)
 
1:55 PM
@Geobits I feel like the moment you leave earth's atmosphere, you are no longer moving in relation to earth's gravity.
 
why not? the moon does
 
Anything that orbits is moving directly in relation to gravity.
 
Let's say I travelled to the moon at velocity X
Then I got to the moon and stopped entirely
But I'm still moving because the moon is moving
 
personally I like to measure everything relative to the sun, that way I can treat any discrepancy in death/km as negligible and everything is really safe.
 
It makes more sense to say "I stopped in relation to the moon."
Not "I am moving at thousands of miles per hour in relation to the earth"
And then let's do the same thing but we'll stop on Mars
Mars doesn't really do anything in relation to earth
So a space shuttle headed to Mars wouldn't have anything to do with earth except for launch
 
2:00 PM
What better measurement do you propose?
 
I think that a space shuttle in space and a human on the earth are not very comparable in terms of velocity
On earth, we move by travelling or just by rotating around. The earth moves around the sun. The sun moves around the center of the milky way. And the milky way is probably floating as well.
I think standing still is pretty safe, so maybe it's the safest way to travel?
Nobody kills a discussion like me!
 
@Rainbolt Geobits is actually pretty good at it, too
 
Ha!
 
2:58 PM
sweet
rep cap at 14.30 UTC :)
 
What do you think, is this a duplicate of this?
Aside from the winning criterion, there is not very much difference.
 
@ProgramFOX That asked for an optimal solution, right?
Are you sure an optimal solution would take too long to compete in your challenge? (Because otherwise, a code challenge doesn't actually make sense anyway if all submissions can be optimal)
If your challenge cannot be solved with an optimal algorithm, then your challenge is not a duplicate I'd say, because you can't reuse answers from the code golf for your own.
(and neither the other way round)
(and if you want to give some support to that opinion, please have a look at my answer here: meta.codegolf.stackexchange.com/a/1876/8478 ;))
 
It won't always be possible to solve it with an optimal algorithm. If you have an empty board (or almost empty board), you can always select a mine.
Not sure if that makes it different enough, though.
 
3:13 PM
no but you could have a statistically optimal algorithm
the question is whether it's feasible to actually analyse the odds of every single move. if that's the case, I think that's a problem with your challenge.
 
That's your choice. You can either put all flags at once, or analyse every single move. The former is better for your count of steps, but that's just a tie breaker.
 
But if it's possible to post a statistically optimal algorithm, than the leaderboard boils down to luck.
ah, hi @PeterTaylor. after our discussion yesterday, I'd value your 2 cents (pence?) on this: meta.codegolf.stackexchange.com/a/1876/8478 (even if it results in a downvote ;))
 
Hmm... aside from having luck that you don't select a mine, you can post an optimal algorithm.
 
@ProgramFOX what I'm saying is, if you can post an optimal algorithm, why would anyone post a suboptimal algorithm? in particular, you'll certainly get multiple optimal submissions, and then their actual order will depend on luck.
 
Yes, you're right.
 
3:20 PM
I had that problem with vector racing
although there was no luck involved
it didn't actually break the challenge, but I had hoped to see a bunch of really cool heuristic solutions and didn't get a single one, because the first one was optimal
so I just got two better optimal solutions with less bugs and less memory/time consumption
 
@MartinBüttner Cents, I'm only carrying my euro wallet at the moment.
 
(since that was my tie breaker)
@PeterTaylor fine by me (I have both in my wallet)
 
I see, with an optimal solution, my tie breaker is quite useless.
 
I have separate wallets for separate currencies, but I only carry my sterling wallet when travelling to the UK.
 
that makes me think of Lord of War... ^^
no I just have a single wallet... I tend to remove my euro currency while I'm in the UK, but somehow this time I forgot
 
3:30 PM
I'm with Tyzoid, although I also upvoted dmckee way back when. I don't think having two questions which differ only in their scoring system is very interesting. I would rather see few questions but all of them very different to each other than a bunch of variations on a theme.
 
@PeterTaylor hm, fair enough. But regardless of whether it's interesting to reuse the same theme or not, wouldn't you at least agree that a fastest-code and code-golf on the same theme do (/can) make for entirely different challenges?
 
3:53 PM
@MartinBüttner They can do, but I'm not convinced they would do in the majority of cases. Both of them ultimately come down to exploring the set of possible implementations. To be genuinely different challenges the different criteria would need to push you in different directions in terms of understanding the underlying structure of the problem.
And really I think the best solution is to write code golf questions with performance constraints which rule out pure brute force approaches.
 
yeah, that's a good point.
@PeterTaylor wow, I've been avoiding the phrase "in future" like the plague (in favour of "in the future") because I thought it was a false friend
speaking of false friends, this is amazing: the English Wikipedia article lists as the first example "embarazada" which (as you probably know) is actually Spanish for "pregnant". The funny thing about that is that "pregnant" is a similarly embarrassing false friend for Germans, because "prägnant" means "concise" or "succinct". :D
 
It seems (on a quick glance at COCA and BNC) to be more common in British English than American, but fairly common in both. Although there is the confounding factor of the structure "in future <noun>", which I didn't try to rule out.
 
4:09 PM
according to english.SE it's pretty much exclusively BE
 
@MartinBüttner That is a classic source of mistakes. The classic one in the other direction is that the English word "constipated" refers to excretory problems, whereas the Spanish "constipado" refers to nasal problems, so Spanish-speakers looking for cold medicine in an English-speaking country sometimes end up with laxatives instead.
 
are English people even generally aware of the common mistakes speaker from other nations unless they learnt that language themselves?
like, the classic German one is "Can I become a hamburger?"
(which every German knows)
in fact, I can't even think of a common mistake English people make in German (which might also be due to the fact that I don't know a lot of English people who can speak German)
 
On closer examination, the COCA results do seem to be almost exclusively "in future <noun>".
@MartinBüttner I don't think so, except possibly elements of accent or grammar which are used to stereotype. (E.g. Germans pronouncing W as we pronounce V, or Russians not using the word "the").
 
well that still means I can use it regularly, because I tend to (try to) speak British English.... and even if I'm talking with American friends, I'm usually not trying to switch to an American dialect... I think that can only go wrong if I try to speak two different dialects of a foreign language :D
@PeterTaylor yeah, I thought so
 
Trying to switch between dialects is very hard, yes. Although when I travel in Mexico I do manage to use the formal "you" which I never use in Spain.
 
4:19 PM
@MartinBüttner I'm a belgian learning german.
 
@overactor Nice! Where in Belgium are you from?
 
but even though german is way closer to dutch than it is to english, I often think of a sentence in english to figure out the german phrase.
flanders
but I'm living in switzerland now.
It's tough learning a language when the people around you speak something that bearly resembles it
 
I don't understand Swiss German ;)
 
It's rough.
But after living here for over one and a half years, I'm finally getting an ear for it.
 
That being said, I've heard within Belgium the dialects differ so much you have a hard time understanding the local dialect 50km away (of course, unless you're trying to communicate with each other).
(I've been to Bruges like 6 times or so)
 
4:24 PM
Bruges is great, if a bit overly touristic.
 
yeah, I know
 
And that's true, some of the dialects are crazy
 
I really want to go to Ghent again... I only went there for a few hours one day, but I've heard it's amazing to go out there
 
Yeah, that might be my favourite belgian city.
Especially during their yearly festival
They have horrible accents there though.
 
4:27 PM
Where in Germany are you from?
My girlfriend is from Frankonia, speaking of accents.
 
Saxony-Anhalt
somewhere between Berlin and Leipzig
 
That's quite a bit up north
I've never been there.
North Germany in general.
Also, the most common mistakes people make in German is obviously getting the articles wrong.
 
I think Germans wouldn't consider anything but Mecklenburg-Vorpommern, Schleswig-Holstein and the northern parts of Lower Saxony as "North Germany" ^^
@overactor yeah that's true, but that happens in any language which has articles with genus I think
 
True.
As for Americans speaking German.
Their accent is horrendous and the often get word order wrong.
Especially in side-sentences
 
It decided to take the wrong period
Reminds me of the diffs in Visual Studio, where it desperately tries to piece together all the curly brackets that didn't change and ends up looking like you sent your code through a shredder
 
4:37 PM
@overactor To be honest, I've met only 3 Americans you actually ever tried to learn German properly (all of them living in Germany for a while), and their German was insanely good. Two of them don't have the slightest accent, and you only notice the odd unusual phrasing. And the third is almost as good.
 
Interesting, maybe the americans I met didn't try hard enough.
Most of them were relatively new to German too I guess.
But they were going to classes.
 
@Rainbolt it's even funnier when the last word of the previous paragraph appears in the the deleted one ;)
@overactor Yeah, I'm pretty sure those people I mentioned are the exception. I'm just saying that I never happened to meet an American who tried but wasn't amazing :D ... but I also never met an American who had just arrived in Germany to stay there for a while.
 
@MartinBüttner I learned quite a bit of German living there as a kid (age 6-10), but that's all gone now. I can count and remember simple words, but that's about it.
 
There's a big english speaking community here in basel
and I worked in a preschool for english kids
I must say, those people don't properly integrate
at least, most of them don't
 
@Geobits Parents in military? ;)
 
4:53 PM
Yep. We were at Ramstein when I was very young, but then at Hahn from 6-10. Good times.
 
@Geobits There's this (British) dude in my course who lived all his live in Germany, but basically doesn't speak German at all, because he spent all his live in this English-speaking military community.
 
Yea, I knew some guys in Japan who were the same way. Never made sense to me.
I remember living in Morbach as a kid, we rented an apartment over a local barber shop. The old lady who ran the shop used to invite us over after school to try to fatten us up. Didn't speak a word of English :)
Lifehack!
 
5:12 PM
I thought today was one of the better what-ifs ^^
 
I'll go read it now
 
@PeterTaylor also, did you see how my PokeBackBot turned out to be totally pessimistic ;)
 
Mid-pack, not bad. I would like to attempt to find a good mixed strategy by genetic optimisation, but I don't know whether it will make it up my priority list. I'm currently mainly focussed on a mathematical analysis of codegolf.stackexchange.com/q/31673/194 ; I want to at least get a reasonably tight asymptotic bound in the hope of writing a publishable paper about the problem.
 
6:00 PM
@PeterTaylor oh wow, that's been keeping you busy for a while now ^^
 
6:35 PM
@Doorknob You are way more on top of things than I am with regards to compiling entries and reporting results. How do you do it?
Oh, I get it now. "This leaderboard was auto-magically generated" - Doorknob
 
@Rainbolt and he's doing two KotHs at the same time ^^
I guess the caveman thing is just generally a bit simpler, and at 100 rounds (and with the different rules) doesn't have such a massive runtime as yours.
 
The runtime for mine was three days straight, but that was the easy part. The hard part was compiling the entries, which he seems to be very on top of.
 
Maybe he's on Unix ^^
 
That or he just isn't using a complicated split pod/round/whatever method.
 
@Geobits that still wouldn't affect compilation
Also, I think his challenge doesn't prompt people to use funny external libraries
 
6:41 PM
Ha, I read that as "compiling the results". Nvm
 
Dang enter key
It's just now dawning on me why trials took so long.
for each trial in trials:
    for each pod in pods:
        for each round in rounds:
            for each player in pod:
                thisOperationIsRidiculouslyExpensive();
 
7:14 PM
@Rainbolt you don't say
 
7:54 PM
two silver and three bronze badges in three days. neat. :) (plus one each on SO, but that was just lucky timing)
While this is doubtlessly an interesting challenge, just the thought of it makes me cringe to bad: codegolf.stackexchange.com/q/35036/8478
 
8:11 PM
You're obviously more of a fan of Chinese Zodiac, then? ;)
 
exactly
 
8:38 PM
@MartinBüttner Whats the problem? ;-)
FWIW I have no interest in astrology whatsoever - Astronomy is much more up my alley. But I thought this might be a quick, easy challenge to perhaps get newer users started/ draw attention to the site, or whatever
Whats with all the username changes these days?
 
8:53 PM
@MartinBüttner Yes. I've managed to prove the link to partitions, and I've been doing a lot of reading to see whether anyone's studied iterative partition sums before, but if so it's very marginal to the main study of partitions. I've calculated the first 60 terms (which took a long time, because beyond about 54 you have to start thinking about using disk for your working space), looked hard for recurrences, and bounded the growth to within a factor of n^-0.5.
I'm hoping to narrow that a shade and maybe come up with some reasonable conjectures to set a roadmap for future research. Always looks good when you're trying to publish ;)
 
@PeterTaylor Are you just publishing/researching things on your own or are you affiliated with any uni?
@DigitalTrauma It's just when I read stuff about it I have to think of people who are really annoying about it. :D
 
9:09 PM
I'm just researching on my own. But I did publish a paper a year or two back with some other people on math.SE, one of whom is a university lecturer.
 
huh, that's pretty cool
what was that about? (not that my maths level would be enough to understand a maths paper)
 
ah, how I love and hate institutional logins
huh, interesting... how did that spark a paper? from the math.SE post I get the impression it was a pretty straightforward manipulation (and I didn't see any discussion in the comments leading to further thoughts)
 
It's an expository paper in a journal aimed at undergrads.
 
ah, I see
that's pretty neat
how long was your university career if I may ask?
 
9:23 PM
3 years
 
does that include an undergraduate degree or not (i.e. 3 years for a Phd)? :P
 
That was my undergraduate degree. I'm only an M.A. Thought about doing a Ph.D. but decided to join the real world instead.
 
haha, fair enough.
interesting. there seem to be few people who leave university early but are still very interested in research and theory.
 
 
1 hour later…
10:40 PM
@MartinBüttner Yes, Ubuntu makes things simple :D (/cc @Rusher)
 

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