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What is the difference between atomic / volatile / synchronized?
...e int counter;
public int getNextUniqueIndex() {
return counter++;
}
It basically reads value from memory, increments it and puts back to memory. This works in single thread but nowadays, in the era of multi-core, multi-CPU, multi-level caches it won't work correctly. First of all it introduce...
Undefined reference to vtable
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The GCC FAQ has an entry on it:
The solution is to ensure that all virtual methods that are not pure are defined. Note that a destructor must be defined even if it is declared pure-virtual [class.dtor]/7.
Therefore, you need to provide a definition fo...
Python truncate a long string
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I would change the condition perhaps to len(data) > 77 to account for the double dots (it's pointless to a truncate only the last character only to replace it with a dot).
– hasen
May 13 '13 at 3:49
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Difference between ApiController and Controller in ASP.NET MVC
I've been playing around with ASP.NET MVC 4 beta and I see two types of controllers now: ApiController and Controller .
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Panel.Dock Fill ignoring other Panel.Dock setting
If you create a panel on a form and set it to Dock=Top and drop another panel and set its Dock=Fill, it may fill the entire form, ignoring the first panel. Changing the tab order does nothing.
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Difference between 2 dates in SQLite
How do I get the difference in days between 2 dates in SQLite? I have already tried something like this:
12 Answers
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Are there any naming convention guidelines for REST APIs? [closed]
...PIs, are there any guidelines or defacto standards for naming conventions within the API (eg: URL endpoint path components, querystring parameters)? Are camel caps the norm, or underscores? others?
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iPhone app signing: A valid signing identity matching this profile could not be found in your keycha
...ted provisioning profile all seems to work as expected, so problem is definitely solved :)
Update: you may have to contact Apple to get a "Renew"-button, or they removed it -- and the solution is to just download it and add it to the keychain, no need to renew.
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Can hash tables really be O(1)?
It seems to be common knowledge that hash tables can achieve O(1), but that has never made sense to me. Can someone please explain it? Here are two situations that come to mind:
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Is an array name a pointer?
...contains space for seven integers, and you can put a value in one of them with an assignment, like this:
a[3] = 9;
Here is a pointer:
int *p;
p doesn't contain any spaces for integers, but it can point to a space for an integer. We can, for example, set it to point to one of the places in the ...