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Why does pthread_cond_wait have spurious wakeups?
...sor systems, making condition wakeup completely predictable might substantially slow all condition variable operations.
In the following comp.programming.threads discussion, he expands on the thinking behind the design:
Patrick Doyle wrote:
> In article , Tom Payne wrote:
> >Kaz Kyl...
How do you add CSS with Javascript?
...sheet.insertRule('strong { color: red; }', sheet.cssRules.length);
...on all but (naturally) IE8 and prior, which uses its own marginally-different wording:
sheet.addRule('strong', 'color: red;', -1);
There is a theoretical advantage in this compared to the createElement-set-innerHTML method, i...
How to add a vertical Separator?
...tretch" Width="1" Margin="2" Stroke="Black" />
<Button>Filter all</Button>
</StackPanel>
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ASP.NET 4.5 has not been registered on the Web server
...chine, and in order to use SQL Express instance instead of the localDB installed by default. I unchecked "Use IIS Express" in my MVC 4 project properties page (Web tab), then I got the following error:
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Circle-Rectangle collision detection (intersection)
... the circle.
Note that this does not require the rectangle to be axis-parallel.
(One way to see this: if none of the edges has a point in the circle (if all the edges are completely "outside" the circle), then the only way the circle can still intersect the polygon is if it lies completely ins...
Remove non-numeric characters (except periods and commas) from a string
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You could use preg_replace to swap out all non-numeric characters and the comma and period/full stop as follows:
$testString = '12.322,11T';
echo preg_replace('/[^0-9,.]+/', '', $testString);
The pattern can also be expressed as /[^\d,.]+/
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How do I discover memory usage of my application in Android?
How can I find the memory used on my Android application, programmatically?
9 Answers
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Add missing dates to pandas dataframe
... a question I had too, thanks! But was wondering if you knew how to dynamically create a list of with the dates which have events?
– Nick Duddy
Jun 5 '17 at 12:08
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Codesign error: Provisioning profile cannot be found after deleting expired profile
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Sometimes your xcode project file gets messed up, especially if you have an old project and first created it with an older version of xcode/iphone sdk. What you need to do is open up the project file in a text editor, search for the 'long string' from your error and manually eras...
Master-master vs master-slave database architecture?
...t seems to offer everything, no single point of failure, everyone can work all the time. The trouble with this is that it is very hard to preserve absolute consistency. See the wikipedia article for more.
Wikipedia seems to have a nice summary of the advantages and disadvantages
Advantages
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