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## Function head_finder

boost::algorithm::head_finder — "Head" finder

## Synopsis

    // In header: <boost/algorithm/string/finder.hpp>

    unspecified head_finder(int N);

## Description

Construct the `head_finder`. The finder returns a head of a given input. The head is a prefix of a string up to n elements in size. If an input has less then n elements, whole input is considered a head. The result is given as an `iterator_range` delimiting the match.

Parameters: |
`N` | The size of the head
Returns: | An instance of the `head_finder` object