|Category: algorithms||Component type: function|
template <class OutputIterator, class Size, class Generator> OutputIterator generate_n(OutputIterator first, Size n, Generator gen);
generate_n(ostream_iterator<int>(cout, "\n"), 100, rand);
 The function object gen is invoked n times (once for each iterator in the range [first, first+n)), as opposed to just being invoked a single time outside the loop. This distinction is important because a Generator need not return the same result each time it is invoked; it is permitted to read from a file, refer to and modify local state, and so on.
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