Function is

Function is_blank

boost::is_blank — is_blank predicate

// In header: <boost/algorithm/string/classification.hpp>


unspecified is_blank(const std::locale & Loc = std::locale());

Construct the is_classified predicate for the ctype_base::blank category.

c++11

Parameters:

Loc

A locale used for classification

Returns:

An instance of the is_classified predicate