QFuture::const_iterator Class
class QFuture::const_iteratorThe QFuture::const_iterator class provides an STL-style const iterator for QFuture. More...
Note: All functions in this class are reentrant.
Public Types
Detailed Description
QFuture provides both STL-style iterators and Java-style iterators. The STL-style iterators are more low-level and more cumbersome to use; on the other hand, they are slightly faster and, for developers who already know STL, have the advantage of familiarity.
The default QFuture::const_iterator constructor creates an uninitialized iterator. You must initialize it using a QFuture function like QFuture::constBegin() or QFuture::constEnd() before you start iterating. Here's a typical loop that prints all the results available in a future:
QFuture<QString> future = ...; QFuture<QString>::const_iterator i; for (i = future.constBegin(); i != future.constEnd(); ++i) cout << qPrintable(*i) << endl;
See also QFutureIterator and QFuture.
Member Type Documentation
const_iterator::difference_type
Typedef for ptrdiff_t. Provided for STL compatibility.
const_iterator::iterator_category
Typedef for std::bidirectional_iterator_tag. Provided for STL compatibility.
const_iterator::pointer
Typedef for const T *. Provided for STL compatibility.
const_iterator::reference
Typedef for const T &. Provided for STL compatibility.
const_iterator::value_type
Typedef for T. Provided for STL compatibility.