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Python Pandas: Get index of rows which column matches certain value
...[i] returns the ith row of df. i does not refer to the index label, i is a 0-based index.
In contrast, the attribute index returns actual index labels, not numeric row-indices:
df.index[df['BoolCol'] == True].tolist()
or equivalently,
df.index[df['BoolCol']].tolist()
You can see the differenc...
Extracting substrings in Go
... Denys SéguretDenys Séguret
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Different results with Java's digest versus external utilities
...file. I am using Windows 7 Professional with SP1 . I have tried Java 6.0.29 and Java 7.0.03 . Can someone tell me why I am getting different hash values from Java versus (many!) external utilities and/or websites? Everything external matches with each other, only Java is returning different ...
Is it possible to disable floating headers in UITableView with UITableViewStylePlain?
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edited Dec 8 '16 at 21:05
shim
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answered Jul 2...
How can I extract a good quality JPEG image from a video file with ffmpeg?
...2).
To output a series of images:
ffmpeg -i input.mp4 -qscale:v 2 output_%03d.jpg
See the image muxer documentation for more options involving image outputs.
To output a single image at ~60 seconds duration:
ffmpeg -ss 60 -i input.mp4 -qscale:v 4 -frames:v 1 output.jpg
This will work with any vid...
Python Flask Intentional Empty Response
... HTTP server must return something. The HTTP 'empty response' response is 204 No Content:
return ('', 204)
Note that returning a file to the browser is not an empty response, just different from a HTML response.
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Replace one character with another in Bash
...
405
Use inline shell string replacement. Example:
foo=" "
# replace first blank only
bar=${foo/ ...
Prevent wrapping of span or div
...white-space: nowrap;
}
.slide {
display: inline-block;
width: 600px;
white-space: normal;
}
<div class="slideContainer">
<span class="slide">Some content</span>
<span class="slide">More content. Lorem ipsum dolor sit amet, consectetur adipisicing ...
.NET 4.0 build issues on CI server
Anybody manage to get .NET 4.0 applications compiling on a CI server without installing Visual Studio 2010 on a CI server?
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Drop multiple tables in one shot in mysql
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Leniel MaccaferriLeniel Maccaferri
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