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Writing Unicode text to a text file?
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323
Deal exclusively with unicode objects as much as possible by decoding things to unicode objects...
Find integer index of rows with NaN in pandas dataframe
...an use to index back into df, e.g.:
df['a'].ix[index[0]]
>>> 1.452354
For the integer index:
df_index = df.index.values.tolist()
[df_index.index(i) for i in index]
>>> [3, 6]
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Getting a list item by index
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answered Mar 17 '13 at 2:06
Mitch WheatMitch Wheat
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MySQL Conditional Insert
...sert, try:
INSERT INTO x_table(instance, user, item)
SELECT 919191, 123, 456
FROM dual
WHERE NOT EXISTS (SELECT * FROM x_table
WHERE user = 123
AND item = 456)
In this, dual is a table with one row only (found origi...
How do I convert a numpy array to (and display) an image?
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240
You could use PIL to create (and display) an image:
from PIL import Image
import numpy as np
...
What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
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243
Curly braces. Passing keyword arguments into dict(), though it works beautifully in a lot of s...
HtmlSpecialChars equivalent in Javascript?
...but it performs better, particularly on large blocks of text (thanks jbo5112).
function escapeHtml(text) {
var map = {
'&': '&',
'<': '&lt;',
'>': '&gt;',
'"': '&quot;',
"'": '&#039;'
};
return text.replace(/[&<>"']/g, function...
How to do the equivalent of pass by reference for primitives in Java
...tln("Toy number in play after increement " + toy.toyNumber);
}
Choice 2: return the value instead of pass by reference
int play(int toyNumber){
System.out.println("Toy number in play " + toyNumber);
toyNumber++;
System.out.println("Toy number in play after increement " + toy...
What's the maximum value for an int in PHP?
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124
From the PHP manual:
The size of an integer is
platform-dependent, although a maximum
value of...
Trying to understand CMTime and CMTimeMake
...are a numerator and denominator, so it is 1/10 of a second, not 1 second.
2) The result will be like CMTimeMake(2, 10), which is 2/10ths of a second.
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