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Find integer index of rows with NaN in pandas dataframe
...n 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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Get first n characters of a string
...ngths on trimmed and untrimmed strings):
$string = (strlen($string) > 13) ? substr($string,0,10).'...' : $string;
So you will get a string of max 13 characters; either 13 (or less) normal characters or 10 characters followed by '...'
Update 2:
Or as function:
function truncate($string, $len...
What is the difference between parseInt(string) and Number(string) in JavaScript? [duplicate]
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330
parseInt("123qwe")
returns 123
Number("123qwe")
returns NaN
In other words parseInt() pa...
What is the most efficient way to store a list in the Django models?
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edited Feb 17 '17 at 13:19
Community♦
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answered Jul 10 '09 at 15:23
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Is there “0b” or something similar to represent a binary number in Javascript
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edited Mar 15 '19 at 10:31
Qwerty
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answered M...
iOS5 Storyboard error: Storyboards are unavailable on iOS 4.3 and prior
...st before final testing I decided to try it out to see if it runs on iOS 4.3. I clicked on the gray 5.0 in the project settings and selected 4.3.
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Using gradle to find dependency tree
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635
For Android, use this line
gradle app:dependencies
or if you have a gradle wrapper:
./grad...
Bad class file magic or version
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edited Apr 17 '15 at 12:53
answered Apr 14 '15 at 15:49
pa...
How to get the first non-null value in Java?
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les2les2
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How can I mask a UIImageView?
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edited Apr 3 '19 at 7:34
kelin
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an...