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add a string prefix to each value in a string column using Pandas
... like to append a string to the start of each value in a said column of a pandas dataframe (elegantly).
I already figured out how to kind-of do this and I am currently using:
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Why can I access private variables in the copy constructor?
...eiterating what behaviour's valid. "access modifiers work on class level, and not on object level." - yes, but why?
The overarching concept here is that it's the programmer(s) designing, writing and maintaining a class who is(are) expected to understand the OO encapsulation desired and empowered t...
How do I convert a string to a double in Python?
...float(x)
2342.3400000000001
There you go. Use float (which behaves like and has the same precision as a C,C++, or Java double).
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Set Additional Data to highcharts series
... @undefinedvariable - hmm, looks like others have edited this and set a new version as the "base" version in jsfiddle. That's unfortunate. Updated the fiddle and now linking to a specific version in the answer.
– Nick
Feb 25 '13 at 21:07
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What are type lambdas in Scala and what are their benefits?
...o write out inline. Here's an example from my code from today:
// types X and E are defined in an enclosing scope
private[iteratee] class FG[F[_[_], _], G[_]] {
type FGA[A] = F[G, A]
type IterateeM[A] = IterateeT[X, E, FGA, A]
}
This class exists exclusively so that I can use a name like FG[...
Convert UTC datetime string to local datetime
I've never had to convert time to and from UTC. Recently had a request to have my app be timezone aware, and I've been running myself in circles. Lots of information on converting local time to UTC, which I found fairly elementary (maybe I'm doing that wrong as well), but I can not find any informat...
Reference list item by index within Django template?
This may be simple, but I looked around and couldn't find an answer. What's the best way to reference a single item in a list from a Django template?
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Can someone explain the right way to use SBT?
I'm getting out off the closet on this! I don't understand SBT. There, I said it, now help me please.
4 Answers
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Why does one hot encoding improve machine learning performance?
...ced that when One Hot encoding is used on a particular data set (a matrix) and used as training data for learning algorithms, it gives significantly better results with respect to prediction accuracy, compared to using the original matrix itself as training data. How does this performance increase h...
Breaking up long strings on multiple lines in Ruby without stripping newlines
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I'm fairly sure that it's not; I tried both undef'ing and redefining String#+ and it doesn't seem like anything is being sent there.
– Jessehz
May 9 '12 at 22:08
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