Function join

examples/llama-bench/llama-bench.cpp:31–40

template<class T>
static std::string join(const std::vector<T> & values, const std::string & delim) {
    std::ostringstream str;
    for (size_t i = 0; i < values.size(); i++) {
        str << values[i];
        if (i < values.size() - 1) {
            str << delim;
        }
    }
    return str.str();
}

template<class T>
static std::vector<T> split(const std::string & str, char delim) {