std::experimental::search (3) - Linux Manuals

std::experimental::search: std::experimental::search

NAME

std::experimental::search - std::experimental::search

Synopsis

Defined in header <experimental/algorithm>
template<class ForwardIterator, class Searcher>
ForwardIterator search( ForwardIterator first, ForwardIterator last, (library fundamentals TS)
const Searcher& searcher );

Searches the sequence [first, last) for the pattern specified in the constructor of searcher.

Effectively executes searcher(first, last). (until C++17)
Effectively executes searcher(first, last).first. (since C++17)

Searcher need not be CopyConstructible.
The standard library provides the following searchers:

                              standard C++ library search algorithm implementation
default_searcher (class template)
                              Boyer-Moore search algorithm implementation
boyer_moore_searcher (class template)
                              Boyer-Moore-Horspool search algorithm implementation
boyer_moore_horspool_searcher (class template)

Parameters

 This section is incomplete

Return value

Returns the result of searcher.operator(), that is, an iterator to the location at which the substring is found or a copy of last if it was not found.

Complexity

Depends on the searcher

Example

// Run this code

  #include <iostream>
  #include <string>
  #include <experimental/algorithm>
  #include <experimental/functional>

  int main()
  {
      std::string in = "Lorem ipsum dolor sit amet, consectetur adipiscing elit,"
                       " sed do eiusmod tempor incididunt ut labore et dolore magna aliqua";
      std::string needle = "pisci";
      auto it = std::experimental::search(in.begin(), in.end(),
                     std::experimental::make_boyer_moore_searcher(
                         needle.begin(), needle.end()));
      if(it != in.end())
          std::cout << "The string " << needle << " found at offset "
                    << it - in.begin() << '\n';
      else
          std::cout << "The string " << needle << " not found\n";
  }

Output:

  The string pisci found at offset 43