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pandas: How do I split text in a column into multiple rows?
...25 F01 300 1:13:37:1,13
If in column are NOT NaN values, the fastest solution is use list comprehension with DataFrame constructor:
df = pd.DataFrame(['a b c']*100000, columns=['col'])
In [141]: %timeit (pd.DataFrame(dict(zip(range(3), [df['col'].apply(lambda x : x.split(' ')[i]) for i ...
How do you make a web application in Clojure? [closed]
...ra's component (I think you are supposed to use the reload interceptor)
no testing facility for async interceptors
requires buy-in (?)
Aleph
Pro (3):
Performant
backpressure
Websocket/SSE support when returning a manifold stream
Cons (1):
Low level, do it yourself style (ie. it just gives ...
When do we need to set ProcessStartInfo.UseShellExecute to True?
...Not exectly sure what Windows versions and/or file systems do it this way, tested on Windows 7, NTFS.)
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“Eliminate render-blocking CSS in above-the-fold content”
...Google may ding you for too much above the fold content. But don't assume; test!
Notes
I'm only doing this on my home page for now so people get a FAST render on my most important page.
Your css won't get cached. I'm not too worried though. The second they hit another page on my site, the .css wi...
How to detect iPhone 5 (widescreen devices)?
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Tested and designed for any combination of SDK and OS:
Swift
Added iPad types. iPad 2 and iPad mini are non-retina iPads. While iPad Mini 2 & above, iPad 3, 4, iPad Air, Air 2, Air 3, and iPad Pro 9.7 have same logical ...
Bootstrap css hides portion of container below navbar navbar-fixed-top
...shCoding, this approach is not good coding practice (fails maintainability test for no good reason). It isn't clear right away what this extra navbar does.
– fragilewindows
Dec 7 '16 at 13:07
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How do I do base64 encoding on iOS?
... to use these functions from objective-c.
These functions are pretty well tested and reliable - unlike many of the implementations you may find in random internet postings.
Don't forget to link against libresolv.dylib.
sha...
How to get users to read error messages?
...s them! No matter how hard you'll try... At one stage during the Win 95 UI testing before it was launched, MS carried out an experiment to read the UI (ed - it should be noted that the message explicitly stated in the context of 'Look under the chair'), with a $100 dollar bill taped to the underside...
Real World Example of the Strategy Pattern
...ww.asp.net/mvc/pluralsight where he uses the strategy pattern in the Unit-test part of the application
He builds a website which has a page that displays items based on popularity. However "Popular" can be many things (most views, most subscribers, creation date, most activity, least amount of com...
Simple way to transpose columns and rows in SQL?
...ivot+')
) piv
order by rowid'
exec(@query)
END
You can test it with the table provided with this command:
exec SQLTranspose 'yourTable', 'color'
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