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Change column type from string to float in Pandas
...y what you want, but what if you wanted to save some memory and use a more compact dtype, like float32, or int8?
to_numeric() gives you the option to downcast to either 'integer', 'signed', 'unsigned', 'float'. Here's an example for a simple series s of integer type:
>>> s = pd.Series([1, 2...
What is the difference between properties and attributes in HTML?
...
Where could I find a complete list of attributes to properties (like for -> htmlFor) and similarly a list of properties that take their initial value from an attribute, yet do not reflect it (input.value). I expect this would be somewhere in t...
When should I use a struct rather than a class in C#?
...ng a structure instead of a class if instances of the
type are small and commonly short-lived or are commonly embedded in
other objects.
Do not define a structure unless the type has all of the following characteristics:
It logically represents a single value, similar to primitive...
How do I safely pass objects, especially STL objects, to and from a DLL?
...l those hoops, nor is there a guarantee that a solution which works in one compiler release will work in the next.
Just create a plain C interface using extern "C", since the C ABI is well-defined and stable.
If you really, really want to pass C++ objects across a DLL boundary, it's technically ...
Are getters and setters poor design? Contradictory advice seen [duplicate]
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Rolling median algorithm in C
...d(x, k)} simply has
\code{y[j] = median(x[(j-k2):(j+k2)])} (k = 2*k2+1), computed very
efficiently.
The two algorithms are internally entirely different:
\describe{
\item{"Turlach"}{is the Härdle-Steiger
algorithm (see Ref.) as implemented by Berwin Turlach.
A tree algorith...
What does “S3 methods” mean in R?
...d objects are. I found that there are S3 and S4 object systems, and some recommend to use S3 over S4 if possible (See Google's R Style Guide at http://google-styleguide.googlecode.com/svn/trunk/google-r-style.html )*. However, I do not know the exact definition of S3 methods/objects.
...
How to avoid isset() and empty()
...And empty
IMHO you should think about not just making the app "E_NOTICE compatible", but restructuring the whole thing. Having hundreds of points in your code that regularly try to use non-existent variables sounds like a rather badly structured program. Trying to access non-existent variables sh...
What does Docker add to lxc-tools (the userspace LXC tools)?
... maven, chef, puppet, salt, debian packages, rpms, source tarballs, or any combination of the above, regardless of the configuration of the machines.
Versioning. Docker includes git-like capabilities for tracking successive versions of a container, inspecting the diff between versions, committing ne...
Load and execution sequence of a web page?
... number of simultaneous requests per domain.
Also depending on whether the component has already been cached or not, the component may not be requested again in a near-future request. If the component has been cached, the component will be loaded from the cache instead of the actual URL.
When the pa...