# std::experimental::search

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< cpp‎ | experimental

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

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:

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

### See also

search | searches for a range of elements (function template)

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