Struct qt_core::q_future_of::ConstIterator

#[repr(C)]
pub struct ConstIterator { /* private fields */ }

The QFuture::const_iterator class provides an STL-style const iterator for QFuture.

C++ class: QFuture<void>::const_iterator.

C++ documentation:

The QFuture::const_iterator class provides an STL-style const iterator for QFuture.

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 << *i << endl;