Function erase_head

Function erase_head_copy

boost::algorithm::erase_head_copy — Erase head algorithm.

Synopsis

template<typename OutputIteratorT, typename RangeT> 
  OutputIteratorT 
  erase_head_copy(OutputIteratorT Output, const RangeT & Input, 
                  unsigned int N);
template<typename SequenceT> 
  SequenceT erase_head_copy(const SequenceT & Input, unsigned int N);

Description

Remove the head from the input. The head is a prefix of a sequence of given size. If the sequence is shorter then required, the whole string is 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

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