10.2.2. Algorithms That Write Container Elements
Some algorithms assign new values to the elements in a sequence. When we use an algorithm that assigns to elements, we must take care to ensure that the sequence into which the algorithm writes is at least as large as the number of elements we ask the algorithm to write. Remember, algorithms do not perform container operations, so they have no way themselves to change the size of a container.
Some algorithms write to elements in the input range itself. These algorithms are not inherently dangerous because they write only as many elements as are in the specified range.
As one example, the fill
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