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Scala actors: receive vs react
...t say that I have quite a lot of Java experience, but have only recently become interested in functional languages. Recently I've started looking at Scala, which seems like a very nice language.
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What is the difference between persist() and merge() in JPA and Hibernate?
...ied to an entity X are
as follows:
If X is a new entity, it
becomes managed. The entity X will be
entered into the database at or before
transaction commit or as a result of
the flush operation.
If X is a
preexisting managed entity, it is
ignored by the persist operation.
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How to check programmatically if an application is installed or not in Android?
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Try with this:
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Add respective layout
setContentView(R.layout.main_activity);
//...
What is the difference between packaged_task and async
...s. Also do note that this behavior was specified in C++14 and up, but also commonly implemented in C++11.
Further differences
By using std::async you cannot run your task on a specific thread anymore, where std::packaged_task can be moved to other threads.
std::packaged_task<int(int,int)> t...
What is the difference between '>' and a space in CSS selectors?
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On delete cascade with doctrine2
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mkdir's “-p” option
So this doesn't seem like a terribly complicated question I have, but it's one I can't find the answer to. I'm confused about what the -p option does in Unix. I used it for a lab assignment while creating a subdirectory and then another subdirectory within that one. It looked like this:
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jQuery - selecting elements from inside a element
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60
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Is gcc 4.8 or earlier buggy about regular expressions?
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<regex> was im...
Why does Dijkstra's algorithm use decrease-key?
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