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## Function replace_head_copy

boost::algorithm::replace_head_copy — Replace head algorithm.

## Synopsis

    template<typename OutputIteratorT, typename Collection1T,
             typename Collection2T>
      OutputIteratorT
      replace_head_copy(OutputIteratorT Output, const Collection1T & Input,
                        unsigned int N, const Collection2T & Format);
    template<typename SequenceT, typename CollectionT>
      SequenceT replace_head_copy(const SequenceT & Input, unsigned int N,
                                  const CollectionT & Format);

## Description

Replace the head of the input with the given format string. The head is a prefix of a string of given size. If the sequence is shorter then required, whole string if considered to be the head. The result is a modified copy of the input. It is returned as a sequence or copied to the output iterator.

Parameters

Format

  A substitute string

Input

  An input string

N

  Length of the head

Output

  An output iterator to which the result will be copied

Returns: An output iterator pointing just after the last inserted character or a modified copy of the input
Notes: The second variant of this function provides the strong exception-safety guarantee

| Copyright © 2002-2004 Pavol Droba