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udfalkso

1,187 karma · joined March 31, 2007

https://twitter.com/udi https://soundprint.co http://www.linkedin.com/in/udifalkson

[ my public key: https://keybase.io/udi; my proof: https://keybase.io/udi/sigs/cvmizkp14UtXju7hS_dkIlcdnilsIyDowFa8pQuCVfE ]

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udfalkso··on Steve Wozniak on why he is leaving Facebook [video]
That is a long list!
udfalkso··on Spotify opens on NYSE, valuing company at almost $30B
Maybe they'll make an Apple TV app now? Does anyone know why that doesn't exist yet?
udfalkso··on Show HN: Launched my first app where people hum songs for others to guess
SoundHound. I never had success with the humming feature though.
udfalkso··on Show HN: Launched my first app where people hum songs for others to guess
Seems like you'd build up a great dataset for training an automated hum -> song classifier if this gains traction.
udfalkso··on Show HN: How early can you retire if you move to another place?
Neat idea.

Issue: After I submit the form I see all my selected options in the url, but the form is reset to initial conditions and the results below do not reflect my adjustments.

udfalkso··on Firefox 59 released
Right. This is also the current standard approach for asking for iOS push permissions. Without intermediary dialog, the app can't try again.
udfalkso··on Bitcoin Miners Fried in Game of Chicken
Is there a good reason for the difficulty adjustment period being 2016 blocks? What would be the consequences of reducing this number?
udfalkso··on Bitcoin Miners Fried in Game of Chicken
I see. Thanks
udfalkso··on Bitcoin Miners Fried in Game of Chicken
Yes, but even if the block time is longer, the probability that I will "win" the block goes up. Someone has to mine the block and if half of the competition goes away my chances go up. This incentive will counter the temptation to stop mining, dampening the effect you mention.
udfalkso··on Bitcoin Miners Fried in Game of Chicken
Let's say half the miners stop mining. This would make it twice as likely that the remaining miners will mine each new block, right? If so, then this acts a bit like a price doubling from their perspective which would counteract the disincentives you mention. Perhaps a new equilibrium will emerge that's not quite so extreme because of this effect.
udfalkso··on Goldman Sachs Is Setting Up a Cryptocurrency Trading Desk
Ok, I'll bite too: xrb_3djcghwbxg5yj41wzoa5xr3xbf9gt4tdzarws9mtpa63ujc5wm6zrimmkuo6

Thanks!

udfalkso··on Elixir multiple processes: Basics
(I had to look it up)

Welt·an·schau·ung ˈveltˌänˌSHouəNG

a particular philosophy or view of life; the worldview of an individual or group.

--

Personally I came for the faster/robust Ruby first and then over time discovered (and am still discovering) the other powerful pieces. I think that's ok.

udfalkso··on Ask HN: Who is hiring? (December 2017)
Where are you located?
udfalkso··on Hello, world: this is WikiTribune
If this is of interest, then you might also find Civil to be an interesting approach to this problem. They're attempting to decentralize the news and create marketplaces that drive the right behavior.

https://joincivil.com/

udfalkso··on Show HN: Float – Save your best links, explore the world's
Delicious reborn.
udfalkso··on Lyft Set to Claim Third of U.S. Market in 2017
It’s not just tips. It’s the 5 star rating.
udfalkso··on Waymo now testing its self-driving cars on public roads with no one at the wheel
Waymo’s tech requires the area to be meticulously mapped correct? Is this why the test is limited to a small geography?
udfalkso··on Simplicity: A New Language for Blockchains [pdf]
FYI for the authors. Typo on page 3: " All Bitcoin Script operations are pure functions of the machine state expect for the signature-verification operations. "

And page 4: "As such, we expect it to be a target for other, higher-level, languages to be complied to."

udfalkso··on The Repressive, Authoritarian Soul of “Thomas the Tank Engine and Friends”
My brother’s theory on this show (which my nephew LOVES) is that it’s coal industry propaganda. The worst train is the Diesel, etc.
udfalkso··on A new kind of map: it’s about time
Very neat idea!

I can't seem to run a search in my location in NY. "Find Me" changes the address but the results are stuck in Seattle. I can't seem to change the query term either.

udfalkso··on What have been the greatest intellectual achievements?
youtube link? thanks
udfalkso··on Ask HN: Is coding like speaking another language?
Not quite, but what I do believe is true is that learning multiple programming languages is similar to learning multiple spoken languages.

Just as knowing Spanish will aid you in learning Portuguese, knowing Python will help you pick up Ruby. After you know a few varying languages it becomes much easier to pick up a new one. You notice that they all share the same basic constructs.

Also, each language (in both realms) brings new modes of expression to the table and these can open your mind to alternate ways of thinking. You notice this with spoken languages most when you run into a phrase that is untranslatable to some other languages. This part is perhaps more true of programming languages than spoken languages, but I believe it is true of both to some degree.

udfalkso··on Phoenix 1.3.0 Released
Yes, you won't regret it.
udfalkso··on Elixir 1.5 released
Yes. Tests run so quickly!
udfalkso··on Elixir 1.5 released
See above. Someone mentioned Gigalixir, and I've been having success with Clever Cloud. I had to do a ton of research before finding a workable option (Heroku is not really a good option imo), so hopefully this helps.
udfalkso··on Elixir 1.5 released
I wasn't aware of Gigalixir, thanks for mentioning that. Looks very promising.

I've been hosting my site at https://clever-cloud.com with good results. I've been using Docker there but they just added beta Phoenix support which makes it really easy. They're French, and I'm in the US. So there have been time zone issues and support has been a bit lackluster at times, but generally they've fixed all the issues I've brought up and have been responsive. Price is right.

udfalkso··on Elixir 1.5 released
I recently rewrote an (admittedly old and stale) django app from the ground up with Elixir/Phoenix. The website gets quite a bit of traffic.

I went from an elaborate multi-tier caching setup, with varnish and memcache, to a ZERO caching setup. The amount of complexity reduced by doing this is huge.

The Elixir app hits the postgres db for nearly every request and I'm getting average response times around 45ms. Quite a bit of that is database wait time. It's super stable and efficient. And I'm running it on a dirt cheap, tiny node in the cloud, where before I needed two small EC2 instances to keep up with peak loads.

Also, now that I've gotten the hang of it I think it's actually more efficient with regards to development than either Django or Rails.

Here are the google crawler response times directly before/after the switch to Phoenix: http://imgur.com/a/FASyJ

udfalkso··on Going Mobile With React Native
This is a good list of pros and cons. I'd just add this:

+ App also runs on Android (and even web, and tvos)

I'm always surprised when people don't list this massive benefit when discussing RN. It's really the core value proposition. The fact that it's even in the conversation when developing for only one platform seems like quite an endorsement of the developer experience with RN.

udfalkso··on How can Ethereum systematically scale better?
I just noticed this paragraph on the lightning network homepage. How far does this go toward what you're discussing here?

https://lightning.network/

"Cross Blockchains. Cross-chain atomic swaps can occur off-chain instantly with heterogeneous blockchain consensus rules. So long as the chains can support the same cryptographic hash function, it is possible to make transactions across blockchains without trust in 3rd party custodians."

udfalkso··on Why Twitter Is Failing to Grow
Interesting thesis.

It was a similar situation during the Terry Semel days at Yahoo! Too much focus on becoming a media company and selling ads.

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