IanWitham

import string

# initialise a "zeroed" frequency count dict for the upper case chars
empty_freq_counts = dict.fromkeys(string.ascii_uppercase, 0)

def freq_count(word):
    # precondition: word is upper and lowercase ascii characters only
    
    # Setup loop invariant. Making a copy of an existing dict
    # is faster than creating a new dict.

IanWitham

from operator import mul

# indices 0 - 64 are non-word characters
# followed by indices corrolating to capital letters
# followed by 6 non-word characters
# followed by indices corrolating to lower-case letters
primes = [1] * 65 \
         + [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101] \
         + [1] * 6 \
         + [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101]

IanWitham

// https://www.youtube.com/watch?v=wOhY-O0UqbI

ArrayList<Particle> particles;
PImage[] bullets;
PImage red_bullet;
PImage green_bullet;
PImage blue_bullet;

final float GRAVITY = 200;

IanWitham

[person for person in world_population
    if is_nice(person) and is_nice(person)]

IanWitham

(require 2htdp/image)

(define-struct spiro (minor-radius
                      major-radius
                      minor-turn-rate
                      major-turn-rate))

(define (major-turns
         minor-turns
         this-spiro)

IanWitham

(require 2htdp/image)

(define FUR_COLOR (make-color 130 130 130))
(define FUR_COLOR_DARK (make-color 80 85 90))
(define FUR_COLOR_LIGHT (make-color 160 160 155))
(define FUR_COLOR_LIGHTEST (make-color 190 190 180))

(define EYE_COLOR_DARK (make-color 20 160 20))
(define EYE_COLOR_LIGHT (make-color 50 200 50))