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What is the difference between NaN and None?
...13]: dtype('O')
In [14]: s_good.dtype
Out[14]: dtype('float64')
Jeff comments (below) on this:
np.nan allows for vectorized operations; its a float value, while None, by definition, forces object type, which basically disables all efficiency in numpy.
So repeat 3 times fast: objec...
Changing the cursor in WPF sometimes works, sometimes doesn't
...gh the mouse changed to the wait cursor I am still able to click any UI element within my WPF application without any problem. Any ideas how I can prevent the user from actually using the mouse during the wait cursor is active?
– Thomas Huber
Dec 4 '12 at 14:46...
When is localStorage cleared?
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Local storage can get cleared when updating chrome. This has happened to me twice in the last 12 months. If the data is important, enable and encourage the user to download the relevant data to file so that it can be re-installed if this happens.
– us...
Difference between a theta join, equijoin and natural join
I'm having trouble understanding relational algebra when it comes to theta joins, equijoins and natural joins. Could someone please help me better understand it? If I use the = sign on a theta join is it exactly the same as just using a natural join?
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How to check if PHP array is associative or sequential?
...ys as associative, so there aren't any built in functions. Can anyone recommend a fairly efficient way to check if an array contains only numeric keys?
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How do I make an HTTP request in Swift?
... by Apple in iBooks, but cannot figure out how to make an HTTP request (something like cURL) in Swift. Do I need to import Obj-C classes or do I just need to import default libraries? Or is it not possible to make an HTTP request based on native Swift code?
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Maximum Length of Command Line String
In Windows, what is the maximum length of a command line string? Meaning if I specify a program which takes arguments on the command line such as abc.exe -name=abc
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Why is it a bad practice to return generated HTML instead of JSON? Or is it?
...nt from your custom URLs/Web services using JQuery or any other similar framework. I've used this approach many times and till now and found the performance satisfactory.
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Handle file download from ajax post
...in URL. Response might be a JSON string or it might be a file (as an attachment). I can easily detect Content-Type and Content-Disposition in my ajax call, but once I detect that the response contains a file, how do I offer the client to download it? I've read a number of similar threads here but no...
Should the folders in a solution match the namespace?
Should the folders in a solution match the namespace?
7 Answers
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