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django template display item value or empty string
... if the variable evaluates to False, ie empty strings, empty lists etc
{{ item.somefield|default_if_none:"" }}
{{ item.somefield|default:"" }}
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Why do my list item bullets overlap floating elements
...low: hidden; to the container UL prevented the text in the individual line items from properly running around the floated block. This solution did the trick!
– jsdalton
Jan 15 '13 at 17:41
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Remove Fragment Page from ViewPager in Android
... Motivated by this answer, I found that the solution is to override the getItemId(int position) method of FragmentPagerAdapter to give a new unique ID whenever there has been a change in the expected position of a Fragment.
Source Code:
private class MyPagerAdapter extends FragmentPagerAdapter {
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JComboBox Selection Change Listener?
... doSomething();
}
});
@John Calsbeek rightly points out that addItemListener() will work, too. You may get 2 ItemEvents, though, one for the deselection of the previously selected item, and another for the selection of the new item. Just don't use both event types!
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Using std Namespace
...+, Third Edition. In order to have a generic, templated function use the 'best' swap method for a parameterized type, you need to make use of a using-declaration and argument dependant lookup (aka ADL or Koenig lookup):
template< typename T >
void foo( T& x, T& y)
{
using std::sw...
Expand/collapse section in UITableView in iOS
...eans value and return 1 if the section isn't expanded, or 1+ the number of items in the section if it is expanded.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (mybooleans[section]) {
///we want the number of people plus the header cell
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How to upload files to server using JSP/Servlet?
...HttpServletRequest#getPart() to collect the individual multipart form data items (most Servlet 3.0 implementations actually use Apache Commons FileUpload under the covers for this!). Also, normal form fields are available by getParameter() the usual way.
First annotate your servlet with @MultipartC...
Cell spacing in UICollectionView
...n a section of UICollectionView ? I know there is a property minimumInteritemSpacing I have set it to 5.0 still the spacing is not appearing 5.0. I have implemented the flowout delegate method.
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Why can tuples contain mutable items?
If a tuple is immutable then why can it contain mutable items?
8 Answers
8
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Why isn't vector a STL container?
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This doesn't answer the question directly. At best, it requires the reader to infer which things explained in this general summary make it non-STL.
– underscore_d
Dec 19 '15 at 13:58
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