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Database development mistakes made by application developers [closed]
...Specifically, using a natural key will give you the ability to control the order in which data in your table is written to the disk. If you know how your table will be queried, you can index it so concurrently-accessed rows will end-up in the same page. Furthermore, you can enforce data integrity us...
How Drupal works? [closed]
...s theming/skinning system. There, it's wrapped in sidebars/headers/widgets/etc..
The rendered page is then handed back to apache and it gets sent back to the user's browser.
During that entire process, Drupal and third-party plugin modules are firing off events, and listening for them to respond. ...
Export CSS changes from inspector (webkit, firebug, etc)
... refersh. So you will lose changes if you accidentally refresh / close tab etc.
– tomblah
Jul 23 '14 at 9:37
How does ...
How to perform Callbacks in Objective-C
...Object:self]; to [object performSelector:selector withObject:self]; in order to get it to work correctly.
– Banjer
Oct 12 '10 at 1:48
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How are 3D games so efficient? [closed]
... a completely full-featured hardware device which is unlikely to exist, in order to show off all the features of the API. But since the hardware doesn't actually exist, it runs on your CPU instead. That's much more inefficient than delegating to a graphics card -- hence your high CPU usage.
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How can I prevent SQL injection in PHP?
...dcoded in your script and chosen from that set.
For example, to do dynamic ordering:
$orders = array("name", "price", "qty"); // Field names
$key = array_search($_GET['sort'], $orders)); // if we have such a name
$orderby = $orders[$key]; // If not, first one will be set automatically.
$query = "S...
Why isn't sizeof for a struct equal to the sum of sizeof of each member?
... @YoYoYonnY that's not possible. The compiler is not allowed to reorder struct members although gcc has an experimental option to do that
– phuclv
Mar 2 '17 at 2:57
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scp with port number specified
...vily upvoted) comments:
With regard to Abdull's comment about scp option order, what he suggests:
scp -P80 -r some_directory -P 80 ...
..., intersperses options and parameters. getopt(1) clearly defines that parameters must come after options and not be interspersed with them:
The parameter...
HEAD and ORIG_HEAD in Git
...anch". that's why when you in detached head , you do git branch foo -b in order to "create" a branch for that orphans commits.
– Royi Namir
Mar 11 '19 at 11:41
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How to perform .Max() on a property of all objects in a collection and return the object with maximu
...er which finds the maximum value on every iteration (making it O(n^2))
The ordering solution is O(n log n)
Taking the Max value and then finding the first element with that value is O(n), but iterates over the sequence twice. Where possible, you should use LINQ in a single-pass fashion.
It's a lot s...