Returns the distance between two iterators.

Synopsis

Declared in <prevector.h>

difference_type
operator‐(
    const_iterator a,
    const_iterator b);
Note

This function is a hidden friend of const_iterator, declared only inside that class: it can be found only through argument-dependent lookup.

Return Value

The number of elements between the two iterators.

Parameters

Name

Description

a

The left‐hand iterator.

b

The right‐hand iterator.

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