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Storing sex (gender) in database
I want to store a user's gender in a database with as little (size/performance) cost as possible.
8 Answers
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Add line break to 'git commit -m' from the command line
I am using Git from the command line and am trying to add a line break to the commit message (using git commit -m "" ) without going into Vim.
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How to get the start time of a long-running Linux process?
Is it possible to get the start time of an old running process? It seems that ps will report the date (not the time) if it wasn't started today, and only the year if it wasn't started this year. Is the precision lost forever for old processes?
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Python Pandas: Get index of rows which column matches certain value
Given a DataFrame with a column "BoolCol", we want to find the indexes of the DataFrame in which the values for "BoolCol" == True
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How to wait for all threads to finish, using ExecutorService?
I need to execute some amount of tasks 4 at a time, something like this:
26 Answers
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String formatting named parameters?
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In Python 2.6+ and Python 3, you might choose to use the newer string formatting method.
print('<a href="{0}">{0}</a>'.format(my_url))
which saves you from repeating the argument, or
print('<a href="{url}">{url}</a>'.format(url=my_url))
if you want named parameters...
How do I read CSV data into a record array in NumPy?
I wonder if there is a direct way to import the contents of a CSV file into a record array, much in the way that R's read.table() , read.delim() , and read.csv() family imports data to R's data frame?
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Remove an entire column from a data.frame in R
Does anyone know how to remove an entire column from a data.frame in R? For example if I am given this data.frame:
6 Answer...
How to make a JTable non-editable
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You can use a TableModel.
Define a class like this:
public class MyModel extends AbstractTableModel{
//not necessary
}
actually isCellEditable() is false by default so you may omit it. (see: http://docs.oracle.com/javase/6/docs/api/javax/swing/ta...
Searching for UUIDs in text with regex
I'm searching for UUIDs in blocks of text using a regex. Currently I'm relying on the assumption that all UUIDs will follow a patttern of 8-4-4-4-12 hexadecimal digits.
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