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How do I check if a column is empty or null in MySQL?
...orks in SQLServer but not in SQLite, as far as I can tell, from testing it now.
– Magne
Oct 3 '17 at 9:59
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Iterate over model instance field names and values in template
...ous comment since comments don't support code formatting. Sorry, I didn't know that.)
– Magnus Gustavsson
Jan 31 '13 at 12:33
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Why it's not possible to use regex to parse HTML/XML: a formal explanation in layman's terms
... closing tags match a previous opening tag. To understand it, you need to know which element is being closed. Without any means to "remember" what opening tags you've seen, no chance.
Note however that most "regex" libraries actually permit more than just the strict definition of regular expression...
NOT IN vs NOT EXISTS
...he following plan.
When the column changes to NULL-able the NOT IN plan now looks like
It adds an extra inner join operator to the plan. This apparatus is explained here. It is all there to convert the previous single correlated index seek on Sales.SalesOrderDetail.ProductID = <correlated_p...
HTML5 best practices; section/header/aside/article elements
...enough information about HTML5 on the web (and also on stackoverflow), but now I'm curious about the "best practices". Tags like section/headers/article are new, and everyone has different opinions about when/where you should use these tags. So what do you guys think of the following layout and code...
What Computer Science concepts should I know? [closed]
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Take a look at this blog post by Steve Yegge (formerly of Amazon, now at Google):
The Five Essential Phone Screen Questions
It goes into some detail about the the five most important concepts that developers should be required to know:
Basic programming (including recursion, file I/O,...
What's the best way to parse command line arguments? [closed]
...hon 2.3 thru 2.6. For python 2.7+ it is not the best answer as argparse is now part of the standard library and optparse deprecrated.
– matt wilkie
Feb 28 '11 at 19:47
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How to name factory like methods?
...turns me an object that behaves as I expect'. I shouldn't always have to know whether it's a brand new object, in fact I might not care. So in suitable cases you might avoid a 'Create...' name, even if that's how you're implementing it right now.
Guava is a good repository of factory naming ideas. ...
C++ code file extension? .cc vs .cpp [closed]
... Why is this the accepted answer? A newer programmer will not know that it does not matter and they deserve a straightforward answer.
– Robben_Ford_Fan_boy
Jul 19 '16 at 15:37
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SET NAMES utf8 in MySQL?
...b you will already see there is crap in it (e.g.using phpmyadmin).
until now this is not a problem! (wrong but works often (in europe)) ..
..unless another client/programm or a changed library, which works correct, will read/save data. then you are in big trouble!
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