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What is the lifetime of a static variable in a C++ function?
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If the function can be called by multiple threads, then does this mean that you need to make sure that static declarations must be protected by a mutex in C++98??
– allyourcode
Oct 9 '14 at 0:57
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Can constructors throw exceptions in Java?
...round though, if it's made itself visible earlier in the constructor (e.g. by assigning a static field, or adding itself to a collection).
One thing to be careful of about throwing exceptions in the constructor: because the caller (usually) will have no way of using the new object, the constructor ...
Why can't I use switch statement on a String?
...ng to a unique integer—its position in the original switch. This is done by first switching on the hash code of the label. The corresponding case is an if statement that tests string equality; if there are collisions on the hash, the test is a cascading if-else-if. The second switch mirrors that i...
PyPy — How can it possibly beat CPython?
...vel features without having to encode the low-level
details.
By separating concerns in this way, our implementation of Python - and
other dynamic languages - is able to automatically generate a
Just-in-Time compiler for any dynamic language. It also allows a
mix-and-match approa...
Remove the bottom divider of an android ListView
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If you want to do this by code it's:
listView.setFooterDividersEnabled(false);
and if you're using a ListFragment you can get the listview by:
listFragment.getListView().setFooterDividersEnabled(false);
Only commented because this comes up as...
How to stop C++ console application from exiting immediately?
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The solution by James works for all Platforms.
Alternatively on Windows you can also add the following just before you return from main function:
system("pause");
This will run the pause command which waits till you press a key and...
Convert Iterator to ArrayList
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I don't get it. In what way is the ArrayList returned by, say, Guava any better than a normal ArrayList? Do they do it in a more efficient way? Even if it is more efficient is it really worth adding an extra dependency (and more complexity) to your project?
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Android: Difference between onInterceptTouchEvent and dispatchTouchEvent?
... It needs to figure out which one of its child views should get the event (by calling child.dispatchTouchEvent). This is basically a hit testing algorithm where you figure out which child view's bounding rectangle contains the touch point coordinates.
But before it can dispatch the event to the app...
Laravel Eloquent Sum of relation's column
...all sum on a collection object, rather than on the builder object returned by products(). It's worth clarifying which one you mean here, and ideally provide a link to explain both.
– Benubird
Nov 5 '14 at 10:59
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Checking if an object is null in C#
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Luca, you can also avoid equality overrides by casting to 'object' in the test. On a similar vein, this answer should claim this instead: "if((object)data != null)" since it avoids errors when equality has been overriden.
– DAG
Ma...