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What are some (concrete) use-cases for metaclasses?
I have a friend who likes to use metaclasses, and regularly offers them as a solution.
19 Answers
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PHP shell_exec() vs exec()
I'm struggling to understand the difference between shell_exec() and exec() ...
4 Answers
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How to pause / sleep thread or process in Android?
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One solution to this problem is to use the Handler.postDelayed() method. Some Google training materials suggest the same solution.
@Override
public void onClick(View v) {
my_button.setBackgroundResource(R.drawable.icon);
Handler handler = new Handler();
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What causes javac to issue the “uses unchecked or unsafe operations” warning
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This comes up in Java 5 and later if you're using collections without type specifiers (e.g., Arraylist() instead of ArrayList<String>()). It means that the compiler can't check that you're using the collection in a type-safe way, using generi...
What is difference between MVC, MVP & MVVM design pattern in terms of coding c#
...ser which can be the UI
Controller: Controls the interaction between Model and View, where view calls the controller to update model. View can call multiple controllers if needed.
MVP:
Similar to traditional MVC but Controller is replaced by Presenter. But the Presenter, unlike Controller is re...
Where does the @Transactional annotation belong?
Should you place the @Transactional in the DAO classes and/or their methods or is it better to annotate the Service classes which are calling using the DAO objects? Or does it make sense to annotate both "layers"?
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What is the native keyword in Java for?
... actual implementation doesn’t have to use JNI. Certain JRE methods are handled intrinsically by the JVM. In fact, it’s not even mandatory that the implementation is actually native code. It’s just “implemented in a language other than the Java programming language”.
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How to do date/time comparison
... options in doing date comparison in Go? I have to sort data based on date and time - independently. So I might allow an object that occurs within a range of dates so long as it also occurs within a range of times. In this model, I could not simply just select the oldest date, youngest time/latest d...
Difference between CMAKE_CURRENT_SOURCE_DIR and CMAKE_CURRENT_LIST_DIR
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The variables CMAKE_CURRENT_SOURCE_DIR and CMAKE_CURRENT_LIST_DIR may refer to different directories for a CMake list file that is included by another file with the include command. E.g., if a CMakeLists.txt is present in a directory project and contains the foll...
keep rsync from removing unfinished source files
I have two machines, speed and mass. speed has a fast Internet connection and is running a crawler which downloads a lot of files to disk. mass has a lot of disk space. I want to move the files from speed to mass after they're done downloading. Ideally, I'd just run:
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