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Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
...e of NumPy's extremely fast vectorized operations instead of our loops. We now have a 30x speedup over the original.
The simplest speed test with apply
The above example should clearly show how slow apply can be, but just so its extra clear let's look at the most basic example. Let's square a Se...
How do I provide custom cast support for my class?
...er, if you use:
object name = "Test";
Role role = (Role) name;
You will now get an InvalidCastException because string cannot be cast to Role, why, the compiler only looks for implicit/explicit casts at compile time based upon their compiled type. In this case the compiler sees name as an object ...
What is a bank conflict? (Doing Cuda/OpenCL programming)
... Sweet thanks for the visual and the explanation. I didn't know about broadcasts and that seems like an important bit of information :) How would I go about verifying that my loads and stores don't cause bank conflicts in shared memory? Do I have to get at the assembly code somehow ...
How to create your own library for Android development to be used in every program you write?
...ipse, enter Project Properties -> Android and check isLibrary property. Now you can add this library to your Android Application project by adding it to list on the same property page.
More detailed instructions here in Working with Library Projects section
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Difference between SelectedItem, SelectedValue and SelectedValuePath
...verlight? I don't believe I'm talking to you. :-)... I'm reading this book nowadays. Really an awesome work. :-)
– Nawaz
Feb 4 '11 at 20:14
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Difference between `const shared_ptr` and `shared_ptr`?
...stion pertinent to my current task. Anyhow, I think I understand very well now. Thanks!
– Dave Lillethun
Jul 22 '13 at 17:23
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Styling Google Maps InfoWindow
...her involved, but in theory you are just drawing a div on the map yourself now, instead of using a normal Info Window.
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Rich vs Anemic Domain Model [closed]
... of all Orders.I think this may have be partially why people prefer Anemic now.
– crush
Oct 25 '17 at 14:05
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How do you find the row count for all your tables in Postgres
...looking for a way to find the row count for all my tables in Postgres. I know I can do this one table at a time with:
15 A...
Do I need a content-type header for HTTP GET requests?
...essage unless the intended media type of the enclosed representation is unknown to the sender. If a Content-Type header field is not present, the recipient MAY either assume a media type of "application/octet-stream" ([RFC2046], Section 4.5.1) or examine the data to determine its type.
It means th...