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In what cases will HTTP_REFERER be empty
...tched from a https URL to a different https URL.
has security software installed (antivirus/firewall/etc) which strips the referrer from all requests.
is behind a proxy which strips the referrer from all requests.
visited the site programmatically (like, curl) without setting the referrer header (se...
What does '
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It's a shorthand for this:
<?php echo $a; ?>
They're called short tags; see example #2 in the documentation.
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Convert a number range to another range, maintaining ratio
...ep in mind that you may get strange results if one of the ranges is very small relative to the other one (not exactly sure, but if there's more than a 1000000 factor difference between the size of the ranges, make sure that it actually behaves like you expect... or learn about floating point inaccur...
Why are joins bad when considering scalability?
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Scalability is all about pre-computing (caching), spreading out, or paring down the repeated work to the bare essentials, in order to minimize resource use per work unit. To scale well, you don't do anything you don't need to in volume, and...
Visual Studio C# statement collapsing
When editing really long code blocks (which should definitely be refactored anyway, but that's beyond the scope of this question), I often long for the ability to collapse statement blocks like one can collapse function blocks. That is to say, it would be great if the minus icon appeared on the cod...
JavaScript data grid for millions of rows [closed]
...ollbar itself - the scrollable area's height is set to the total height of all the rows. The rows are still being added and removed as the user is scrolling, but the scrolling itself is done by the browser. That allows it to be very fast yet smooth (onscroll events are notoriously slow). The cave...
How can I retrieve Id of inserted entity using Entity framework? [closed]
...to ObjectSet and SaveChanges on related ObjectContext. Id will be automatically filled for you:
using (var context = new MyContext())
{
context.MyEntities.Add(myNewObject);
context.SaveChanges();
int id = myNewObject.Id; // Yes it's here
}
Entity framework by default follows each INSERT wi...
Unicode character in PHP string
... the \uxxxx Unicode syntax so you can use json_decode to work on an artifically created JSON string representation. I changed the wording though to have that clarified.
– Stefan Gehrig
May 19 '11 at 12:48
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How does a PreparedStatement avoid or prevent SQL injection?
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Sure, but you can still hardcode some or all of your parameters.
– tangens
Oct 17 '09 at 17:56
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How do I find out which process is locking a file using .NET?
... Good point. This wasn't a problem with the deployment script (used internally), but would be in other scenarios.
– orip
Jan 5 '12 at 10:54
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