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How to apply a function to two columns of Pandas dataframe
Suppose I have a df which has columns of 'ID', 'col_1', 'col_2' . And I define a function :
12 Answers
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Oracle TNS names not showing when adding new connection to SQL Developer
...cognized, use the following procedure:
Define an environmental variable called TNS_ADMIN to point to the folder that contains your tnsnames.ora file.
In Windows, this is done by navigating to Control Panel > System > Advanced system settings > Environment Variables...
In Linux, define...
TypeLoadException says 'no implementation', but it is implemented
...nt - for me 'running again' implied F5. I've updated the answer. Of course all this wouldn't have happened with a decent source control tool, but don't get me started on that subject...
– Benjol
Jun 4 '09 at 6:21
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Unicode Processing in C++
...use the open source Internation Components for Unicode (ICU) library originally developed by Taligent.
It handles strings, locales, conversions, date/times, collation, transformations, et. al.
Start with the ICU Userguide
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How do I keep track of pip-installed packages in an Anaconda (Conda) environment?
I've installed and have been using the Anaconda Python distribution, and I have started using the Anaconda (Conda) environment. I can use the standard conda install... command to put packages from the distribution into my environments, but to use anything outside (i.e. Flask-WTF, flask-sqlalchem...
What is the { get; set; } syntax in C#?
I am learning ASP.NET MVC and I can read English documents, but I don't really understand what is happening in this code:
1...
Does Java have something like C#'s ref and out keywords?
...n change internals to the array or object and it will be reflected in the caller.
– Romain Hippeau
May 10 '10 at 21:27
12
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How to do an instanceof check with Scala(Test)
I'm trying to incorporate ScalaTest into my Java project; replacing all JUnit tests with ScalaTests. At one point, I want to check if Guice's Injector injects the correct type. In Java, I have a test like this:
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Prevent browser caching of AJAX call result
...t, myself. Of course ?cache could be any wording that the API doesn't actually want.
– doubleJ
Jul 10 '13 at 4:15
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How to make lists contain only distinct element in Python? [duplicate]
...ving
return list(_f(seq, idfun))
def _f(seq, idfun=None):
''' Originally proposed by Andrew Dalke '''
seen = set()
if idfun is None:
for x in seq:
if x not in seen:
seen.add(x)
yield x
else:
for x in seq:
x = idfun(x)
if x not in seen:
s...