Linux C++ stdhash function

The std::hash function in C++ is a part of the C++ Standard Library and is used to generate a hash value for a given input. It is defined in the <functional> header file.

Here's an example of how to use the std::hash function in a Linux C++ program:

#include <iostream>
#include <functional>

int main() {
    std::hash<std::string> hasher; // Create a hasher object for string types

    std::string input = "Hello, World!";
    size_t hashValue = hasher(input); // Generate the hash value

    std::cout << "Hash value: " << hashValue << std::endl;

    return 0;
}

In this example, we create a std::hash object for std::string types. We then pass a string ("Hello, World!") to the hasher object, which generates the hash value. The hash value is of type size_t and can be printed or used for other purposes.

Note that the std::hash function is a template function and can be specialized for different types if needed