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hellabites

HN member
Joined
Sun, Feb 23, 2014, 11:49 PM UTC
HN karma
4
Public activity
19 items

About hellabites

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Recent public activity

  1. comment
    Comment #19167150

    Just because I like GNU parallel: parallel -kj1 'f="{}"; [[ -f "${f/data/A}" ]] || echo $f' ::: *_data.csv

  2. comment
    Comment #19167104

    This is better relative to the `sed` solution as it handles the `0000` case well.

  3. comment
  4. comment
    Comment #19166853

    I didn't realize Zsh (and Bash) was capable of removing zero padding in that way. Everybody has there own style, but I would prefer to print the missing file pattern and avoid loop…

  5. comment
    Comment #19166437

    Just for fun some bash: for k in $(seq -f %04.f 1 501); do f="${k}_A.csv" ! [[ -f "$f" ]] && echo $f || : done or more succinctly, for k in {0001..0501}_A.csv; do ! [[ -f "$f" ]] &…

  6. comment
    Comment #18734715

    My cat perpetually wants to go outside.

  7. comment
    Comment #16156046

    Gold had intrinsic value before electronics, but for basically the same reason: it's immutable. The bitcoin blockchain is also immutable.

  8. comment
    Comment #15323182

    Github flavored markdown does do tables (in a manner that's almost equivalent to org): https://github.com/adam-p/markdown-here/wiki/Markdown-Cheats...

  9. comment
    Comment #12194145

    Your algorithm had a bit of a typo--you want to subtract (resp. add) to calculate the odd and even parts of a function. If you don't have a nearly symmetric span of x values, you m…

  10. comment
    Comment #12193780

    This can be rather difficult for general data where an explicit equation isn't obvious (even though it'll work quite often as pointed out by johncolanduoni below). [I think it's ne…

  11. comment
    Comment #12188367

    Two fluids with a density difference and a velocity gradient usually have a common force acting upon them, e.g. gravity, which enforces so-said interface. Perturbations to the aver…

  12. comment
    Comment #12185556

    Gravity is the result of an appropriately accelerating frame (i.e. the curvature of spacetime).

  13. comment
    Comment #12184754

    Name seems fine to me. From the first paragraph of the wiki-page: In fluid dynamics, gravity waves are waves generated in a fluid medium or at the interface between two media when …

  14. comment
    Comment #12060374

    Disappointed by the lack of 1337.

  15. comment
    Comment #11906130

    They claim that it has an unlimited number of write cycles.

  16. comment
    Comment #8237464

    Don't know why this is being downvoted. It's important for scientists to use the correct, well-established terms when discussing their research. This is most true for formal public…

  17. comment
    Comment #8234988

    They use the term velocity to mean speed a lot :(.

  18. comment
    Comment #7288291

    No, but I am very thankful for your posted workaround.

  19. comment