It seems that nearly every post on reddit.com/r/programming is about someone's lisp to X converter.
Is this true? The key is to measure.
$ python how_many_lisp_posts.py 'http://www.reddit.com/r/programming.json?limit=100'
1 out of 100 posts about lisp: 1.00%
(to feed into your own converter...)
$ python how_many_lisp_posts.py 'http://www.reddit.com/r/programming.json?limit=100' --result-as-lisp
(format t "~D out of ~D posts about lisp: ~F%" 1 100 (* 100 (/ 1 100)))
| import json | |
| import sys | |
| import urllib | |
| def fetch_content(url): | |
| response = urllib.urlopen(url) | |
| return json.load(response) | |
| def is_about_lisp(title): | |
| title_lower = title.lower() | |
| return "lisp" in title_lower and "to" in title_lower | |
| if __name__ == "__main__": | |
| result_as_lisp = "--result-as-lisp" in sys.argv | |
| url = sys.argv[1] | |
| response = fetch_content(url) | |
| listings = response["data"]["children"] | |
| titles = [listing["data"]["title"] for listing in listings] | |
| lisp_titles = filter(is_about_lisp, titles) | |
| if result_as_lisp: | |
| print '(format t "~D out of ~D posts about lisp: ~F%" {0} {1} (* 100 (/ {0} {1})))'.format(len(lisp_titles), len(titles)) | |
| else: | |
| percent = 100.0 * len(lisp_titles) / len(titles) | |
| print "{0} out of {1} posts about lisp: {2:.2f}%".format(len(lisp_titles), len(titles), percent) |