title: C++ equivalent of StringBuffer/StringBuilder?
body: <p>Is there a C++ Standard Template Library class that provides efficient string concatenation functionality, similar to C#'s <a href="http://msdn.microsoft.com/en-us/library/system.text.stringbuilder.aspx" rel="noreferrer">StringBuilder</a> or Java's <a href="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/StringBuffer.html" rel="noreferrer">StringBuffer</a>?</p>