extr

63 ms·

781.
by extr 9y ago
you nailed it. dplyr is better the further you are from doing heavy duty data analysis or creating production code. if you're writing some simple transforms to put data into a report, fine. someone is probably going to want to look at
782.
by extr 9y ago
That's because you're comparing to base-r. The data.table way would be: dat[col_a == 'Good', .(Length = .N, Sum = sum(col_c)), col_b]
783.
by extr 9y ago
Cool, you caught me being hyperbolic. They are not literally a massive bomb. > Even new pouch cells are way safer than they used to be. Right, because these packs filled with recycled cells are going to have the latest protections. >
784.
by extr 9y ago
Semantics. Is a battery undergoing thermal runaway/venting "exploding"? Or merely "ejecting scorching hot gas and catching fire?" Maybe it's not blowing up like an IED, but either way I don't want it happe
785.
by extr 9y ago
Yeah, I'm aware you can buy them. I have 4 cells sitting in front of me right now. But there is a big difference between someone specifically buying them for use in a high-discharge device like a flashlight or vaporizer versus picking
786.
by extr 9y ago
This isn't unique to Telsa, all vehicles are becoming more difficult to repair as computers and software replace what used to be handled by mechanical systems. I would actually much prefer to drive next to a Tesla knowing that the guy
787.
by extr 9y ago
Yes, this is extremely dangerous. I'm sure some of the people mentioned have the expertise to pull it off, but for most this is like building a massive bomb in your garage. There's a reason that 18650s aren't generally sold d
788.
by extr 9y ago
It's really good for situations where you have large groups of people that all need to informally pay a small amount of money. If you've ever organized an event like this (like say...a college party), you know how annoying it is t
789.
by extr 9y ago
I'm not sure this is anything new though. Even before Venmo, I've always had friends who were overly concerned with keeping things "even" between us and friends who were very loose with money and wouldn't mind spott
790.
by extr 9y ago
Young millennial male, every single person I know uses Venmo. IMO this article largely misses the point of the app. It's replaced cash/checks is all, it's not some huge social upheaval in the way we use money that needs to be
791.
by extr 9y ago
Did you read the rest of my post? Streaming services solve a lot of the problems you're having, the same ones I had before I switched over. I remember the same thing, days of trying to extract raw MP3 files from my iPhone in some obfus
792.
by extr 9y ago
If you're the kind of person who has a mostly static, well defined set of musical tastes, congratulations, subscription services aren't targeted at you! They still sell CDs and I really doubt that individual track/album sales
793.
by extr 9y ago
I don't know, to me the statement begs the question "So why wasn't it a great fit?". People are going to speculate regardless of an announcement from you, if it were me I would prefer to just keep my head low and let tho
794.
by extr 9y ago
I would argue that you're confusing "brain receiving complete information" with "brain doing inference on what information it does receive to get you close enough". You don't need the full screen to tell that t
795.
by extr 9y ago
must be nice to post a tweet that you're looking for "interesting roles" and immediately have the replies fill up with "come to microsoft", "come to google" etc etc. strange he would just throw tesla under
796.
by extr 9y ago
As a complete aside, google translate is incredible. Until I started reading the same thing again, I didn't even realize the page was french. And even then, I thought the second section was the translation, not the first!
797.
by extr 9y ago
I agree and am in a similar demo. I think I just as often use "kk" but I'm not able to place exactly where I picked this up from or what it's origins are. UrbanDictionary claims it's internet slang for "okay, c
798.
by extr 9y ago
I think you're right that pure math is hidden too long, and with too many "applied" detours along the way. When I was getting my BS in math, I started hearing concepts my junior/senior year that would have done a lot to
799.
by extr 9y ago
"Twitter is basically a bunch of 00s forums that would all hate each other mashed together but also for some reason, professional journalists" - https://twitter.com/StuntBirdArmy/status/733846091347693568
800.
by extr 10y ago
I was more talking about dual n-back style training, that tries to improve your generalized memory ability. Of course you're right there's another way to look at it, but it's basically the difference between crystallized and
801.
by extr 10y ago
I'm going to be straight, a lot of this just seems like, at best, general advice for getting things done that may or may not work for any given person. At worst, some pseudo-scientific mumbo jumbo that references disproven concepts. It
802.
by extr 10y ago
Yeah it's very YMMV. Although if you've never had caffeine jitters then you just may not be drinking enough to notice the effect. And supposedly the ratio matters. I "dose" at a 100mg:200mg caffeine:theanine ratio.
803.
by extr 10y ago
Indeed, YMMV but I take 200mg of L-Theanine with my morning coffee and I find it does a lot for my "caffeine jitters'. Research is mixed, but some trials suggest it is a real and substantial effect. Supposedly they have a synergi
804.
by extr 10y ago
If anyone wants to hear more from the creator, he was on an episode of Chapo Trap House and they interviewed him about this film: https://soundcloud.com/chapo-trap-house/episode-65-no-future...
805.
by extr 10y ago
Part of the reason actuaries make so much is that they are certified and legally required to sign off on analysis, similar to the way civil engineers put their signature (and reputation) on their work. But you would be surprised how many de
806.
by extr 10y ago
I'm struggling to find the exact passage, but in Thomas Metzinger's Being No One, he brings up a similar concept in regard to lucid dreaming. There we find ourselves with access to the full spectrum of experience that we are capab
807.
by extr 10y ago
I have a Pine64 2GB sitting fairly uselessly on my desk right now. I can't believe they already have this new product after the huge fiasco that was shipping the original board and components. Go check out the /r/pine64 subre
808.
by extr 10y ago
This touches on an interesting aspect of my very early childhood memories. Do you ever have dreams where you "know" you're in a familiar location, like your old high school or childhood home, but they have a completely differ
809.
by extr 10y ago
Perhaps someone on HN has had a similar experience to me. I can "remember" my mother telling my father that she was pregnant with my little brother, which means I was less than 21 months old at the time. I have some specific detai
810.
by extr 10y ago
If anyone hasn't read the short story that Arrival is based on, definitely check it out, it's called "Story of Your Life". Ted Chiang is a fantastic SciFi writer and I was very excited (worried?) that this particular sto

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