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How to check if a column exists in Pandas
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643
This will work:
if 'A' in df:
But for clarity, I'd probably write it as:
if 'A' in df.colum...
Changing case in Vim
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472
Visual select the text, then U for uppercase or u for lowercase. To swap all casing in a visua...
CSS attribute selector does not work a href
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194
+100
Use the ...
How can I check if a key is pressed during the click event with jQuery?
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4 Answers
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Finding the author of a line of code in Mercurial
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edited Mar 18 '13 at 14:21
answered Feb 9 '10 at 10:44
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How to plot multiple functions on the same figure, in Matplotlib?
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import math
import matplotlib.pyplot as plt
t = linspace(0, 2*math.pi, 400)
a = sin(t)
b = cos(t)
c = a + b
plt.plot(t, a, 'r') # plotting t, a separately
plt.plot(t, b, 'b') # plotting t, b separately
plt.plot(t, c, 'g') # plotting t, c separately
plt.show()
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Curly braces in string in PHP
...yntax
echo "This works: {$arr['key']}";
// Works
echo "This works: {$arr[4][3]}";
// This is wrong for the same reason as $foo[bar] is wrong outside a string.
// In other words, it will still work, but only because PHP first looks for a
// constant named foo; an error of level E_NOTICE (undefine...
Fixed stroke width in SVG
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Zach Saucier
20.4k1010 gold badges6868 silver badges120120 bronze badges
answered Aug 20 '09 at 7:49
Erik DahlströmE...
XML Schema: Element with attributes containing only text?
...ype.)
– C. M. Sperberg-McQueen
Jan 24 '13 at 9:00
@Ashwin you might need to reference the type with the type namespace...
Is it OK to use Gson instance as a static field in a model bean (reuse)?
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4 Answers
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