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MySQL Error 1093 - Can't specify target table for update in FROM clause
... modify the same table which you use in the SELECT part.
This behaviour is documented at:
http://dev.mysql.com/doc/refman/5.6/en/update.html
Maybe you can just join the table to itself
If the logic is simple enough to re-shape the query, lose the subquery and join the table to itself, employing ap...
Convert String to Float in Swift
...ext into your input field (12p.34, or even 12.12.41).
Obviously, if Apple does add a floatValue to Swift this will throw an exception, but it may be nice in the mean time. If they do add it later, then all you need to do to modify your code is remove the extension and everything will work seamlessl...
How do I check for a network connection?
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Does this take care of "limited availability"?
– tofutim
Sep 13 '11 at 0:51
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Why is lock(this) {…} bad?
The MSDN documentation says that
16 Answers
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What does the “Just” syntax mean in Haskell?
I have scoured the internet for an actual explanation of what this keyword does. Every Haskell tutorial that I have looked at just starts using it randomly and never explains what it does (and I've looked at many).
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How to append a char to a std::string?
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why do you consider += better than push_back? Is it just less typing or do you have another reason?
– Glen
Sep 24 '09 at 14:35
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Django datetime issues (default=datetime.now())
...u add a record.
Django has a feature to accomplish what you are trying to do already:
date = models.DateTimeField(auto_now_add=True, blank=True)
or
date = models.DateTimeField(default=datetime.now, blank=True)
The difference between the second example and what you currently have is the lack o...
How to query MongoDB with “like”?
...egular expressions refer to this link
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
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How to construct a std::string from a std::vector?
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I think you can just do
std::string s( MyVector.begin(), MyVector.end() );
where MyVector is your std::vector.
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How to get hex color value rather than RGB value?
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-1. As mentioned by orip, you could use toString(16). Downvoted for other inefficiencies. If you're going to declare hexDigits on every function call, at least do it in rgb2hex's function body (not hex's body), so the array is not redefined 3 times per 1 call to rgb2hex. Also le...