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Programmatically obtain the phone number of the Android phone
... caveats to be aware of. This can return null or "" or even "???????", and it can return a stale phone number that is no longer valid. If you want something that uniquely identifies the device, you should use getDeviceId() instead.
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Is there a way to @Autowire a bean that requires constructor arguments?
... possible. One of the beans that I need to autowire requires arguments to its constructor. I've looked through the Spring docs, but cannot seem to find any reference to how to annotate constructor arguments.
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How to make a great R reproducible example
When discussing performance with colleagues, teaching, sending a bug report or searching for guidance on mailing lists and here on Stack Overflow, a reproducible example is often asked and always helpful.
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Interface or an Abstract Class: which one to use?
...u want to force your user-programmers along a particular path. Other times it would be bad. Imagine if PHP's Countable and Iterator interfaces were abstract classes instead of interfaces.
One approach that's common when you're uncertain which way to go (as mentioned by cletus below) is to create ...
How do I use valgrind to find memory leaks?
... for Python).
To run Valgrind, pass the executable as an argument (along with any
parameters to the program).
valgrind --leak-check=full \
--show-leak-kinds=all \
--track-origins=yes \
--verbose \
--log-file=valgrind-out.txt \
./executable exampleParam...
PHP Composer update “cannot allocate memory” error (using Laravel 4)
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A bit old but just in case someone new is looking for a solution, updating your PHP version can fix the issue.
Also you should be committing your composer.lock file and doing a composer install on a production environment which...
Why do we need extern “C”{ #include } in C++?
...ompiles into a very different set of code. When you include a header file with a C++ compiler, the compiler is expecting C++ code. If, however, it is a C header, then the compiler expects the data contained in the header file to be compiled to a certain format—the C++ 'ABI', or 'Application Binary...
Activity restart on rotation Android
...plication, when I rotate the device (slide out the keyboard) then my Activity is restarted ( onCreate is called). Now, this is probably how it's supposed to be, but I do a lot of initial setting up in the onCreate method, so I need either:
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The Role Manager feature has not been enabled
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You can do this by reading from the boolean property at:
System.Web.Security.Roles.Enabled
This is a direct read from the enabled attribute of the roleManager element in the web.config:
<configuration>
<system.web>
<roleManager enabled="true" />
</system.web>
<...
Which is the fastest algorithm to find prime numbers?
Which is the fastest algorithm to find out prime numbers using C++? I have used sieve's algorithm but I still want it to be faster!
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