C++ Primer, Fifth Edition

10.4.1. Insert Iterators

An inserter is an iterator adaptor (§ 9.6, p. 368) that takes a container and yields an iterator that adds elements to the specified container. When we assign a value through an insert iterator, the iterator calls a container operation to add an element at a specified position in the given container. The operations these iterators support are listed in Table 10.2 (overleaf).

Table 10.2. Insert Iterator Operations

There are three kinds of inserters. Each differs from the others as to where elements are inserted:

• back_inserter ...