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Python Anaconda - How to Safely Uninstall
...Mavericks). I wanted to revert to the default version of Python on my Mac. What's the best way to do this? Should I delete the ~/anaconda directory? Any other changes required?
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How to prevent ifelse() from turning Date objects into numeric objects
...de me loose a checkmark. The current version of the help page does not say what to expect from factor arguments. My vote would be for a factor return object that had levels that were the union of the levels of true's and false's levels.
– IRTFM
Aug 28 '16 at 20...
Select TreeView Node on right click before displaying ContextMenu
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Great answer, thank you! It would be helpful to show what the i and ei namespace mappings resolve to though and which assemblies they can be found in. I assume: xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" and xmlns:ei="http://schemas.microsoft.com/expr...
XPath to select multiple tags
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exactly what I was looking for. XML namespaces the way they are used in real life are a unholy mess. For a lack of being able to specify something like /a/b/(:c|:d|*e) your solution is exactly what is needed. Purists can argue all th...
How do I get a PHP class constructor to call its parent's parent's constructor?
...oesn't have anything to do with Papa, but still want the benefits of using what's going on in GrandPa's constructor. Maybe Papa is doing a bunch of junk in the constructor that isn't needed or wanted by Kiddo, but it still has useful components.
– Halfstop
Mar ...
Replacing blank values (white space) with NaN in pandas
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What a nice improvement! I should have thought of this in retrospect, but got hung up on doing boolean replacements for some reason. One question - is there an advantage to doing the basestring check vs. just str(x).isspace()...
How to manually trigger validation with jQuery validate?
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For whatever reason I do not get the custom error text when I validate this way. May have something to do with the fact I'm running inside a Durandal dialog. Having tons of issues with this framework in said context.
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UnicodeDecodeError when redirecting to file
...this is the reason for Python's universal newline file reading mode).
Now, what I have called "character" above is what Unicode calls a "user-perceived character". A single user-perceived character can sometimes be represented in Unicode by combining character parts (base character, accents,…) fou...
Calculate a Running Total in SQL Server
...he problem is that the SQL Server implementation of the Over clause is somewhat limited.
Oracle (and ANSI-SQL) allow you to do things like:
SELECT somedate, somevalue,
SUM(somevalue) OVER(ORDER BY somedate
ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW)
AS RunningTotal
FR...
Why are arrays covariant but generics are invariant?
...Jon Skeet:
No, a List<Dog> is not a List<Animal>. Consider what you can do with a List<Animal> - you can add any animal to it... including a cat. Now, can you logically add a cat to a litter of puppies? Absolutely not.
// Illegal code - because otherwise life would be Bad
List...