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Way to read first few lines for pandas dataframe
Is there a built-in way to use read_csv to read only the first n lines of a file without knowing the length of the lines ahead of time? I have a large file that takes a long time to read, and occasionally only want to use the first, say, 20 lines to get a sample of it (and prefer not to load the...
Is there a CSS not equals selector?
Is there something like != (not equal) in CSS?
e.g, I have the following code:
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MySQL join with where clause
I have two tables I want to join.
2 Answers
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Applying function with multiple arguments to create a new pandas column
I want to create a new column in a pandas data frame by applying a function to two existing columns. Following this answer I've been able to create a new column when I only need one column as an argument:
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How can I know when an EditText loses focus?
I need to catch when an EditText loses focus, I've searched other questions but I didn't find an answer.
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Rsync copy directory contents but not directory itself
I'm trying to synchronize two contents of folders with different name:
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How to get JSON objects value if its name contains dots?
I have a very simple JSON array (please focus on "points.bean.pointsBase" object):
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What does the > (greater than bracket) mean beside file names in Eclipse's Package Explorer?
I'm setting up a new dev machine with Eclipse 3.7 Indigo. After pulling a my code down from SVN, the source tree in the Package Explorer is intermittently littered with a > to the left of the file name The parent package names have them too. (Note that this is an AspectJ project, but I don't thi...
Is there a TRY CATCH command in Bash
I'm writing a shell script and need to check that a terminal app has been installed. I want to use a TRY/CATCH command to do this unless there is a neater way.
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Parcelable where/when is describeContents() used?
Does anyone know where/when this method of a Parcelable is called?
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