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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.
...
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', ...
Does JavaScript guarantee object property order?
...
I roughly tested the conclusion in node v8.11 and it is correct.
– merlin.ye
Jul 20 '18 at 5:31
1
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Splitting a string into chunks of a certain size
... only include the latter code. The former requires that you understand and test for the string being a multiple of chunk size prior to using, or understand that it will not return the remainder of the string.
– CodeMonkeyKing
Jan 2 '13 at 22:37
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HTML input textbox with a width of 100% overflows table cells
... then be like 30 pixels).
The following solutions works very well for me (tested in Firefox, IE 9, Safari):
<table style="background-color: blue; width: 100%;" cellpadding="0" cellspacing="0">
<tr>
<td style="background-color: red; padding: 3px;">
<div style="mar...
How to create a printable Twitter-Bootstrap page
...l-xs-* before each col-md-* and this fixed the issue. DISCLAIMER: I didn't test adding a container as <div class="row"></div> which may also have solved the problem(seems obvious).
– Fr0zenFyr
May 29 '15 at 10:05
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