boost::algorithm::trim_all — Trim All.
// In header: <boost/algorithm/string/trim_all.hpp> template<typename SequenceT> void trim_all(SequenceT & Input, const std::locale & Loc = std::locale());
Remove all leading and trailing spaces from the input and compress all other spaces to a single character. The input sequence is modified in-place.
Parameters:
Input
An input sequence
Loc
A locale used for 'space' classification
Returns:
A trimmed copy of the input