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How do I compare strings in Java?
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However, I ran into a bug, changed one of them into .equals() instead, and it fixed the bug.
23 Answers
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Java: how to convert HashMap to array
... answered Jul 7 '09 at 5:47
Landon KuhnLandon Kuhn
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Why I am Getting Error 'Channel is unrecoverably broken and will be disposed!'
When I try to launch my AndEngine Activity , I get this error:
19 Answers
19
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Why do std::shared_ptr work
...g delete). When the shared_ptr is destroyed, it calls that stored function and that will call the deleter.
A simple sketch of the type erasure that is going on simplified with std::function, and avoiding all reference counting and other issues can be seen here:
template <typename T>
void del...
python date of the previous month
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datetime and the datetime.timedelta classes are your friend.
find today.
use that to find the first day of this month.
use timedelta to backup a single day, to the last day of the previous month.
print the YYYYMM string you're looki...
Why is address zero used for the null pointer?
...ll pointer in C source while represented differently at runtime. The C++ standard has a note that makes clear that converting "an integral constant expression with value zero always yields a null pointer, but converting other expressions that happen to have value zero need not yield a null pointer"....
Vagrant's port forwarding not working [closed]
... with a simple HTTP server you can use -- go to the folder with index.html and run sudo python -m SimpleHTTPServer 80, then try hitting that with curl from both boxes. If that works, then it's probably an Apache configuration issue. I don't have enough experience with Apache to help if that's the ...
C++ include and import difference
What is the difference between #include and #import in C++?
5 Answers
5
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Do I need elements in persistence.xml?
...="OrderManagement">
<description>This unit manages orders and customers.
It does not rely on any vendor-specific features and can
therefore be deployed to any persistence provider.
</description>
<jta-data-source>jdbc/MyOrderDB<...
Can you set a border opacity in CSS?
... */
}
The problem with this approach is that some browsers do not understand the rgba format and will not display any border at all if this is the entire declaration. The solution is to provide two border declarations. The first with a fake opacity, and the second with the actual. If a browser is ...