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Does a dot have to be escaped in a character class (square brackets) of a regular expression?
A dot . in a regular expression matches any single character. In order for regex to match a dot, the dot has to be escaped: \.
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Get pandas.read_csv to read empty values as empty string instead of nan
I'm using the pandas library to read in some CSV data. In my data, certain columns contain strings. The string "nan" is a possible value, as is an empty string. I managed to get pandas to read "nan" as a string, but I can't figure out how to get it not to read an empty value as NaN. Here's sam...
CentOS 64 bit bad ELF interpreter
I have just installed CentOS 6 64bit version, I'm trying to install a 32-bit application on a 64-bit machine and got this error:
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Default initialization of std::array?
With C++11 std::array , do I have the guarantee that the syntax std::array<T, N> x; will default-initialize all the elements of the array ?
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CSS - How to Style a Selected Radio Buttons Label?
I want to add a style to a radio button's selected label:
6 Answers
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Easiest way to copy a single file from host to Vagrant guest?
I have a use case where I occasionally want to copy a single file from my host machine to the Vagrant guest.
18 Answers
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Select rows of a matrix that meet a condition
In R with a matrix:
6 Answers
6
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How do you rename a table in SQLite 3.0?
How do you rename a table in SQLite 3.0?
2 Answers
2
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Showing Difference between two datetime values in hours
I am retrieving two date time values from the database. Once the value is retrieved, I need the difference between the two values.
For that, I create a timespan variable to store the difference of the 2 date values.
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