How to Elegantly Implode a Vector of Strings?

Elegant Solutions for Imploding Vector of Strings

Imploding a vector of strings into a single string is a common operation in programming. While there are various methods, this article explores two elegant solutions to maximize readability and efficiency.

The first approach involves utilizing a user-defined function. Here's the code snippet:

<code class="cpp">static std::string& implode(const std::vector<std::string>& elems, char delim, std::string& s) {
    for (std::vector<std::string>::const_iterator ii = elems.begin(); ii != elems.end(); ++ii) {
        s += (*ii);
        if (ii + 1 != elems.end()) {
            s += delim;
        }
    }

    return s;
}</code>

This function takes a vector of strings, a delimiter, and a reference to a string variable. It iterates through the vector, appending each element to the string variable and adding the delimiter where necessary.

However, a more elegant solution is to leverage the powerful Boost library:

<code class="cpp">#include <boost/algorithm/string/join.hpp>
...
std::string joinedString = boost::algorithm::join(elems, delim);</code>

This approach utilizes the boost::algorithm::join function, which takes a sequence of strings and a delimiter as arguments and returns a single string.

Using Boost provides enhanced conciseness and readability while ensuring the performance benefits of the vector iteration approach. Additionally, it increases code portability, as Boost is widely supported across different platforms.

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