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What are transparent comparators?
...neous types (e.g. the pointer_comp type in https://stackoverflow.com/a/18940595/981959 is not transparent according to STL's definition, but defining pointer_comp::is_transparent allows it to be used to solve the problem). If you only ever lookup in your std::set<T, C> with keys of type T or i...
How do I update all my CPAN modules to their latest versions?
How do I update all my CPAN modules to their latest versions?
5 Answers
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sql query to return differences between two tables
...e the same exposed names. Use correlation names to distinguish them. I get error if table names are same and you pull them from two different databases.
– Hammad Khan
Jul 20 '11 at 19:10
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Should a retrieval method return 'null' or throw an exception when it can't produce the return value
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Only throw an exception if it is truly an error. If it is expected behavior for the object to not exist, return the null.
Otherwise it is a matter of preference.
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PDOException “could not find driver”
...in your code reveals you are trying to connect with the mysql driver. Your error message indicates that this driver is unavailable.
Check that you have the mysql extension installed on your server.
In Ubuntu/Debian you check for the package with:
dpkg --get-selections | grep php | grep mysql
In...
How Drupal works? [closed]
...g, automatically sortable tables, and result set paging. Drupal’s custom error handler is set, and all enabled modules are loaded. Finally, Drupal fires the init hook, so that modules have an opportunity to be notified before official processing of the request begins.
Once Drupal has completed bo...
How to serialize an Object into a list of URL query parameters?
...ithout knowing the keys of a JavaScript Object , how can I turn something like...
22 Answers
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What is the difference between Trap and Interrupt?
...n the ALU finds this problem. Just like a segmentation fault. Not all math errors cause interrupts (overflow doesn't), though.
– Aaron Digulla
May 22 '12 at 8:13
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Why does volatile exist?
...expects. Just like the "most vexing parse" is not the sign of the compiler error, neither is the case here.
– iheanyi
Jul 17 '18 at 23:54
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Keyboard shortcut to comment lines in Sublime Text 2
In Sublime Text 2 , how do I enclose a selection in a comment ?
Is there a keyboard shortcut for this action?
15 Answer...