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Why should I learn Lisp? [closed]
...ltiple versions of his program utilized slightly different AI routines and testing on 40 or so computers yielded some pretty neat results (I wish it was online somewhere for me to link to, but I don't think it is).
Two semesters ago I used Scheme (a language based on Lisp) to write an interactive p...
When is CRC more appropriate to use than MD5/SHA1?
...ox" hash function, and do not use it as a general purpose hash. Be sure to test each application of it for suitability.
UPDATE
It seems the site is down. The internet archive has a copy though.
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How do I add a simple jQuery script to WordPress?
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After much searching, I finally found something that works with the latest WordPress. Here are the steps to follow:
Find your theme's directory, create a folder in the directory for your custom js (custom_js in this example).
Put your custom jQuery in a .js file in this directory (jquery_test...
Pandas conditional creation of a series/dataframe column
...f['color'] = ['red' if x == 'Z' else 'green' for x in df['Set']]
%timeit tests:
import pandas as pd
import numpy as np
df = pd.DataFrame({'Type':list('ABBC'), 'Set':list('ZZXY')})
%timeit df['color'] = ['red' if x == 'Z' else 'green' for x in df['Set']]
%timeit df['color'] = np.where(df['Set']==...
Android Endless List
..., adding items when the user scrolls to the end of the list.
public class Test extends ListActivity implements OnScrollListener {
Aleph0 adapter = new Aleph0();
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setListAdapter(adapter)...
Web workers without a separate Javascript file?
... BlobBuiler is now deprecated. Use Blob instead. Currently supported in latest Firefox/WebKit/Opera and IE10, see compatibility tables for older browsers.
– Félix Saparelli
Jan 19 '13 at 9:42
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How can I split a text into sentences?
...
tokenizer = nltk.data.load('tokenizers/punkt/english.pickle')
fp = open("test.txt")
data = fp.read()
print '\n-----\n'.join(tokenizer.tokenize(data))
(I haven't tried it!)
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Sound effects in JavaScript / HTML5
...ou should use
(new Audio()).canPlayType("audio/ogg; codecs=vorbis")
to test whether the browser supports Ogg Vorbis.
If you're writing a game or a music app (more than just a player), you'll want to use more advanced Web Audio API, which is now supported by most browsers.
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Rank function in MySQL
...ows the variable initialization without requiring a separate SET command.
Test case:
CREATE TABLE person (id int, first_name varchar(20), age int, gender char(1));
INSERT INTO person VALUES (1, 'Bob', 25, 'M');
INSERT INTO person VALUES (2, 'Jane', 20, 'F');
INSERT INTO person VALUES (3, 'Jack', ...
Using “like” wildcard in prepared statement
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@BalusC this applies to MSSQL, Postgres, and MySQL in my testing. The String being made into a parameter is itself interpreted as a mix of data and control instructions. SQL concatenation occurs before it is interpreted and preserves the vulnerability. The IEEE Center for Secure De...