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What Content-Type value should I send for my XML sitemap?
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The difference between text/xml and application/xml is the default character encoding if the charset parameter is omitted:
Text/xml and application/xml behave differently when the charset
parameter is not explicitly specified. If the default charset ...
What's the difference between design patterns and architectural patterns?
...ou find in programs. It allows us to deconstruct a large complex structure and build using simple parts. It provides a general solution for a class of problems.
A large complex software goes through a series of deconstruction at different levels. At large level, architectural patterns are the tool...
Why are Subjects not recommended in .NET Reactive Extensions?
...currently getting to grips with the Reactive Extensions framework for .NET and I am working my way through the various introduction resources I've found (mainly http://www.introtorx.com )
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git merge: apply changes to code that moved to a different file
... git did not notice that the code in the new file was the same as the old, and so none of my changes are there.
3 Answers...
How to select rows with one or more nulls from a pandas DataFrame without listing columns explicitly
I have a dataframe with ~300K rows and ~40 columns.
I want to find out if any rows contain null values - and put these 'null'-rows into a separate dataframe so that I could explore them easily.
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When to use enumerateObjectsUsingBlock vs. for
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Ultimately, use whichever pattern you want to use and comes more naturally in the context.
While for(... in ...) is quite convenient and syntactically brief, enumerateObjectsUsingBlock: has a number of features that may or may not prove interesting:
enumerateObjectsUsingB...
Unicode equivalents for \w and \b in Java regular expressions?
Many modern regex implementations interpret the \w character class shorthand as "any letter, digit, or connecting punctuation" (usually: underscore). That way, a regex like \w+ matches words like hello , élève , GOÄ_432 or gefräßig .
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What does “error: option --single-version-externally-managed not recognized” indicate?
...not recognized when pip install ing varions packages (including PyObjC and astropy ). I've never seen this error before, but it's now also showing up on travis-ci builds for which nothing has changed.
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What's the difference between using CGFloat and float?
...mething "heavier" than float, right? At which points should I use CGFloat, and what makes really the difference?
5 Answers
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Understanding MongoDB BSON Document size limit
...r to 20k)
So except for truly bizarre
situations, it'll work great. And in
the exception case or spam, I really
don't think you'd want a 20mb object
anyway. I think capping trackbacks as
15k or so makes a lot of sense no
matter what for performance. Or at
least special casing if i...