mhartl

53 ms·

1. 541.▲
   by mhartl 14y ago

   The price will eventually stabilize (possibly at 0).
2. 542.▲
   by mhartl 14y ago

   They're not that different, so if you're just starting out I recommend following the more stable 3.2 version. Once you've finished that, you'll be in a position to learn the Rails 4.0–specific material very quickly (especially once the supp
3. 543.▲
   by mhartl 14y ago

   You're right, of course, but it's not just that. In previous versions of Rails, the default page (a static file served out of the public/ directory) worked just fine on Heroku. It was only the magical “About your application’s environment”
4. 544.▲
   by mhartl 14y ago

   Thanks for sharing your story. Glad to hear it! :-)
5. 545.▲
   by mhartl 14y ago

   All right, based on everyone's feedback I was able to get things working on Heroku and have updated the news post and book accordingly. Thanks! HN rocks.
6. 546.▲
   by mhartl 14y ago

   Completely new features like TurboLinks aren't covered yet (they will probably be in the full third edition later this year), but additions like strong parameters and the new Active Record finders are covered. Glad you like the book!
7. 547.▲
   by mhartl 14y ago

   Thanks! That link had the missing piece, which is to configure Rails to serve static assets. See https://news.ycombinator.com/item?id=5411968 .
8. 548.▲
   by mhartl 14y ago

   Thanks. Yes, I just realized that it's "working", even though it shows an error. See https://news.ycombinator.com/item?id=5411968 . This is new behavior in Rails 4.0, which is why it threw me. The default page works on Heroku going back to
9. 549.▲
   by mhartl 14y ago

   Thanks. I think I know what the problem is. Tracking it down now... Edit: Yes, I figured it out. In Rails 4.0, the default page for a new app is no longer served as a static file from the public/ directory. Instead, something magical happ
10. 550.▲
    by mhartl 14y ago

    Even with an explicit Ruby line in the Gemfile, I get this error: $ heroku logs . . . heroku[slugc]: Slug compilation failed: unrecognized error Here's the Gemfile: source 'https://rubygems.org' ruby '2.0.
11. 551.▲
    by mhartl 14y ago

    Please do send feedback! Any significant structural changes will have to wait until the next full edition (slated for production later this year), but bug and typo reports are hugely appreciated. I typically process such reports as an email
12. 552.▲
    The Ruby on Rails Tutorial for Rails 4.0 (beta)(news.railstutorial.org)

    195 points by mhartl 14y ago|44 comments
13. 553.▲
    by mhartl 14y ago

    Bitcoin doesn't have built-in deflation; it has built-in hardness: a(n eventual) strictly fixed supply. Deflation comes from currency concentration; inflation comes from currency dilution. Bitcoin has neither.
14. 554.▲
    by mhartl 14y ago

    Virtually no mainstream economist advocates a perfectly hard currency. This is either an indictment of hard currencies, or an indictment of mainstream economists. You can probably guess how I feel. Unfortunately, discussions on this subject
15. 555.▲
    by mhartl 14y ago

    It's worth nothing in this context that the OP and many of the commenters here might have trouble landing a job at 37signals because they are misspelling the name of the company: http://37signals.com/svn/posts/1088-how-not-to-apply-for-a-j
16. 556.▲
    by mhartl 14y ago

    Ah, so following Greenspun's tenth rule [1], perhaps we have this: Any sufficiently complicated web application contains an ad hoc, informally specified, bug-ridden, slow implementation of half of Ruby on Rails. [1] http://en.
17. 557.▲
    by mhartl 14y ago

    This actually sounds like a promising idea, though only if you've got insane dev chops on the founding team. In the Ruby world, Sinatra would be the obvious place to start. On the other hand, you might just end up reinventing Rails.
18. 558.▲
    by mhartl 14y ago

    I think the main value of Bitcoin is that it's a perfectly hard currency, not that's it's anonymous (or not). Monetary dilution is alarmingly easy with today's fiat currencies, and replacing them with Bitcoin would fix that basic flaw. ( Di
19. 559.▲
    by mhartl 14y ago

    I continue to be impressed at how cleverly Y Combinator hacks investing. What a breath of fresh air!
20. 560.▲
    by mhartl 14y ago

    Consider Bulirsch-Stoer. https://en.wikipedia.org/wiki/Bulirsch%E2%80%93Stoer_algorit...
21. 561.▲
    by mhartl 14y ago

    If you're serious about learning history, there's no substitute for reading primary sources: http://books.google.com/ Remember that the cliché is right: the winners write the history books. The antidote is primary documents (and humility)
22. 562.▲
    by mhartl 14y ago

    The minimum wage is as perfect a litmus test as we have for separating those who think they understand basic economics from those who actually do.
23. 563.▲
    by mhartl 14y ago

    Furthermore, I believe it is only included in the extended edition of The Two Towers (but I could be wrong on that point). You're right if you s/The Two Towers/Return of the King/
24. 564.▲
    by mhartl 14y ago

    There's a natural monopoly in a medium of savings used to defer consumption. Among competing currencies, the winner is the "bubble that doesn't pop". Until the monopoly is established, though, volatility is to be expected, as it would be wi
25. 565.▲
    by mhartl 14y ago

    The attention to detail cracks me up. It even has a test suite!
26. 566.▲
    by mhartl 14y ago

    I've definitely spent too much time in Fairbanks (flying Alaska Airlines, natch), because when I read The temperature that evening was a brain-numbing minus 16 degrees Fahrenheit I thought, "Oh, 16 below isn't so bad. 40 below—now that's
27. 567.▲
    by mhartl 14y ago

    Musk's plan in a way serves as a reminder for those of us that tend to overestimate the role luck plays in the personal journey towards entrepreneurial success. I agree that Elon's results with Tesla and Space X are not principally (or ev
28. 568.▲
    by mhartl 14y ago

    I think a lot of Asian parents in particular have good intentions in this regard but don't understand the realities of a career in medicine. The hours in medicine are brutal, the pay is much less than most people believe, and virtually ever
29. 569.▲
    by mhartl 14y ago

    It's interesting to note that (unless I missed something) all the struggling ambitious 20-somethings interviewed for the article are women. (I don't include Ross Perlin, who was interviewed not because he's struggling but because he wrote
30. 570.▲
    by mhartl 14y ago

    The original joke goes like this: Why is 6 afraid of 7? Because 7 8 [ate] 9. In octal, this reads "Because 7 10 11", which doesn't work because our tendency is to read it as decimal, yielding "seven ten eleven".