Return a view to part of the string
Declared in header </boost/url/grammar/string_view_base.hpp#L343[boost/url/grammar/string_view_base.hpp,window=blank_]>
</boost/url/grammar/string_view_base.hpp#L343[boost/url/grammar/string_view_base.hpp,window=blank_]>
constexpr string_view substr( size_type pos = 0, size_type n = core::string_view::npos) const;
See core::string_view::substr
core::string_view::substr
string_view
pos
size_type
n