Simple 64 bit string hash

str64bit_hash.cpp

uint64_t str_hash1(std::string str) {
    uint64_t result = 0;
    uint64_t base = 53;
    uint64_t base_pow = 1;
    for_each(str.begin(), str.end(), [&](char c) {
        result += (c - 'a' + 1) * base_pow; base_pow *= base;
    });
    return result;
}

int main()
{
    cout << str_hash1("aaaa") << endl;
    return 0;
}