Nobody can remember how to use Docker, it is far too confusing. So here are some hints.
sudo docker build -t simple_flask:dockerfile .
sudo docker run -p 5000:5000 simple_flask:dockerfile python hello.py
My actual intention is to learn Ansible. But in order to run Ansible you need Docker, unless you happen to have a rackful of machines at your disposal which I do not.
| #!/usr/bin/env python | |
| # https://en.wikipedia.org/wiki/Isomorphic_keyboard | |
| # any hexagonal layout is defined by two offsets (the value of the third is forced by the first two) | |
| import sys | |
| many = [20 * [None] for _ in range(20)] | |
| def display(): | |
| width = 4 |
| v1 = [0, 2, -1]; | |
| v2 = [1, 3, 3]; | |
| y = [v2[0] - v1[0], v2[1] - v1[1], v2[2] - v1[2]]; | |
| translate(v1) | |
| rotate(-acos(y[2] / norm(y)), cross(y, [0, 0, 1])) | |
| cylinder(h=norm(y), d=0.1); |
Before spending time and money building a lot of electronics, let's prototype the thing in Javascript.
Hmm. Maybe a better idea would be to make up a board that accepts a Teensy 3.6, and provides audio hardware, and a bunch of pushbuttons and a few other controllers. Then you can develop code on a real Teensy with representative hardware support. When you go to the real instrument you're only changing the form factor, and maybe the number of buttons or switching to touch-sensitive or whatever.
Prior art - the Tooba, 2015
Use https://www.codecogs.com/eqnedit.php to edit your math. Use the little menu at the bottom to select "HTML (Edit)", and copy the stuff into your Gist. Here is a fairly meaningless example.
Clicking on this will allow your reader to review and edit the source.
| """ | |
| https://twitter.com/fermatslibrary/status/1067423316095508480 | |
| Today's paper is a good example of an unsolved conjecture being disproved by counterexample. | |
| Goldbach stated that every positive odd integer is either prime or the sum of a prime and | |
| twice a square. 5777 and 5993 are the only known counterexamples. | |
| https://fermatslibrary.com/s/a-not-so-famous-goldbach-conjecture#email-newsletter | |
| """ | |
| # this is python 2, not python3 |
git-svn is a git command that allows using git to interact with Subversion repositories.git-svn is part of git, meaning that is NOT a plugin but actually bundled with your git installation. SourceTree also happens to support this command so you can use it with your usual workflow.
Reference: http://git-scm.com/book/en/v1/Git-and-Other-Systems-Git-and-Subversion
You need to create a new local copy of the repository with the command
| """ | |
| There is an unfortunate thing about Python scoping. You can't easily access the variables | |
| of a calling function (as you can do in Scheme) so if you want to use those variables you | |
| need to jump thru silly hoops. See | |
| https://stackoverflow.com/questions/15608987/access-variables-of-caller-function-in-python | |
| The nice thing about using a caller's variables is that it provides a nice way to do closures. | |
| Variable access in closures will work OK as long as you are not ASSIGNING the variable. In | |
| this case, we assign indices of "scope" but we never assign scope itself -- if we did, Python | |
| would conclude that scope belongs to stuff, not to make_thing. Annoying. |