About the second case, it was likely due to time spent on matching unicode digits, as per the reasoning for this stackoverflow post, http://stackoverflow.com/q

About the second case, it was likely due to time spent on matching unicode digits, as per the reasoning for this stackoverflow post, http://stackoverflow.com/questions/16621738/d-is-less-efficient-than-0-9 http://stackoverflow.com/questions/16621738/d-is-less-effici...