Circle and Rectangle
Image made by Dylan Carlson using Python’s turtle graphics. This image is made up entirely of copies of a large rectangle rotated around one corner. Click on image to see higher resolution version.
zipTimer: an iPod/iPhone app for pacing piano practice, cooking, workouts, you name it.
Photo by Dylan
Painting by 31416kungfu.
Composers combine notes. That’s all.
— Igor Stravinsky
Fun stack machine code (Python 3) posted to github in file sm.py.
Examples:
1. Simple instruction: run("1 2 add") ==> 3
2. More complicated code: run("1 2 add 2 3 add mul") ==> 15
3. New instruction: run("defprog cube dup dup mul mul /defprog 3 cube") ==> 27
4. Use variables: run("3 a sto 4 b sto a rcl square b rcl square add") ==> 25
You can also run this at the command line, e.g., python3 sm.py 1 2 add.
Verbosity is on by default, in which case you get a stack trace, e.g.,
[nano] python3 sm.py 1 2 add 3 add
=================================
code: [‘1’, ‘2’, ‘add’, ‘3’, ‘add’]
———
token: 1
stack: [1]
———
token: 2
stack: [1, 2]
———
token: add
in exop, stack: [1, 2, ‘add’]
stack: [3]
———
token: 3
stack: [3, 3]
———
token: add
in exop, stack: [3, 3, ‘add’]
stack: [6]
==============
6
Say python3 sm.py for more information.
zipTimer: an iPod/iPhone app for pacing piano practice, cooking, workouts, you name it.
Blur
Accidental photo … did I drop my camera? No memory of this one!
zipTimer: an iPod/iPhone app for pacing piano practice, cooking, workouts, you name it.
A Math Problem
The house deals from a huge, essentially infinite, deck of cards composed of spades, hearts, diamonds, and clubs in equal proportions. Each person plays separately against the house. On each round, cards are dealt until a heart appears. The cards are counted. If there are an odd number, the house wins, and the player pays one dollar to the house for each card. If there are an even number, the player wins, and the house pays him $1.04 for each card. Is this a fair game?
Explain.
zipTimer: an iPod/iPhone app for pacing piano practice, cooking, workouts, you name it.
Circle and Square 