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Getting “cannot find Symbol” in Java project in Intellij
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Select Build->Rebuild Project will solve it
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FB OpenGraph og:image not pulling images (possibly https?)
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I ran into the same problem and reported it as a bug on the Facebook developer site. It seems pretty clear that og:image URIs using HTTP work just fine and URIs using HTTPS do not. They have now acknowledged that they are "looking into this."
Update: As of 2020, th...
CSS Background Opacity [duplicate]
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Children inherit opacity. It'd be weird and inconvenient if they didn't.
You can use a translucent PNG file for your background image, or use an RGBa (a for alpha) color for your background color.
Example, 50% faded black background:
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Throwing cats out of windows
Imagine you're in a tall building with a cat. The cat can survive a fall out of a low story window, but will die if thrown from a high floor. How can you figure out the longest drop that the cat can survive, using the least number of attempts?
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git pull fails “unable to resolve reference” “unable to update local ref”
Using git 1.6.4.2, when I tried a git pull I get this error:
31 Answers
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What does functools.wraps do?
... was doing. So, I'm asking this question so that there will be a record of it on StackOverflow for future reference: what does functools.wraps do, exactly?
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List of macOS text editors and code editors [closed]
I searched for this and found Maudite's question about text editors but they were all for Windows.
39 Answers
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What are the lesser known but useful data structures?
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Tries, also known as prefix-trees or crit-bit trees, have existed for over 40 years but are still relatively unknown. A very cool use of tries is described in "TRASH - A dynamic LC-trie and hash data structure", which combines a trie with a hash function.
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Use of Finalize/Dispose method in C#
...doesn't use unmanaged resources, you simply implement a Dispose method as with normal interface implementations:
public sealed class A : IDisposable
{
public void Dispose()
{
// get rid of managed resources, call Dispose on member variables...
}
}
When implementing an unsealed...
How does delete[] “know” the size of the operand array?
...array's boundaries to delete[] . But where is that information stored? Is it standardised?
9 Answers
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