Function isNumber

Duration/src/ofxTLUIHeader.cpp:37–42

#include <locale>
bool isNumber(const string& s){
	locale loc;
	std::string::const_iterator it = s.begin();
    while (it != s.end() && (std::isdigit(*it, loc))) ++it;
	return !s.empty() && it == s.end();
}

ofxTLUIHeader::ofxTLUIHeader(){
	gui = NULL;