Changeset 33870

Timestamp:

Apr 30, 2006, 3:35:16 AM (16 years ago)

Author:

david_abrahams

Message:

Move difference_type from the Forward Traversal Iterator concept to
the Single Pass Traversal concept, so that input iterators are still
input iterators. It does make sense to measure the distance between
Single Pass iterators, provided you're willing to throw away the data.

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