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Izzy Vivian Dupree
Software, writing, and movement!
Software, writing, and movement!

Izzy Vivian's posts

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I made this Chrome extension for unloading tabs to save on RAM/CPU/network/etc. I made it because the other ways of doing this didn't do quite what I wanted. Feel free to send me feature requests! See the README for the messy details of why I implemented unloading in this particular way.

User CSS to hide animated parrots in Slack:

span[class*="emoji"][style^="background"][style*="http"][style*="parrot"][style*=".gif"] {
background-color: deeppink !important;
background-image: none !important;

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Trying to use Python virtual envs (Arch Linux, python 3.4). How has Googling not told me what I'm doing wrong?  Tutorials say either of these should run without errors:

% cd ~/test; mkdir a; cd a; pyvenv b
Error: [Errno 13] Permission denied

% cd ~/test; mkdir c; cd c; virtualenv3 d
Using base prefix '/usr'
Traceback (most recent call last):
 File "/usr/bin/virtualenv3", line 3, in <module>
 File "/usr/lib/python3.4/site-packages/", line 832, in main
 File "/usr/lib/python3.4/site-packages/", line 994, in create_environment
   site_packages=site_packages, clear=clear, symlink=symlink))
 File "/usr/lib/python3.4/site-packages/", line 1192, in install_python
   copy_required_modules(home_dir, symlink)
 File "/usr/lib/python3.4/site-packages/", line 1131, in copy_required_modules
   copyfile(filename, dst_filename, symlink)
 File "/usr/lib/python3.4/site-packages/", line 468, in copyfile
 File "/usr/lib/python3.4/", line 237, in makedirs
   mkdir(name, mode)
FileExistsError: [Errno 17] File exists: 'd/lib/python3.4/lib-dynload'

Hey are there any coworking spaces in the Boston area that support IPv6?

What would you call an algorithm that lets you put arbitrary data in an arbitrary order relative to each other, like a doubly linked list, but also gives you constant-time comparison between list nodes that returns the order you put them in?  It needs to have better asymptotics for changing/adding to the order than an array/vector.

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After one too many times of not being able to show people the video that may change how you hear the phrase "change the world" forever, I recorded and YouTubed it.  It's from the GPL'ed game "Fish Fillets" and is, like the game, full of oddball humor.

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Does Ruby have an analogue of ? Ruby's wikibook's reference is incomplete; for example, for "case" it misses the "when 'foo', 'bar'" syntax.  Ruby's ISO standard is $250.  Still looking.

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Security/Vagrant folks: why should I believe that "vagrant init precise32" can't let a MITM pwn my VM?  I haven't found documentation of Vagrant's security architecture yet.
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