virtual char do_narrow(E ch, char dflt) const;
virtual const E *do_narrow(const E *first, const E *last,
char dflt, char *dst) const;
The first protected member template function returns (char)ch
, or dflt
if that expression is undefined.
The second protected member template function stores in dst[I]
the value do_narrow(first[I], dflt)
, for I
in
the interval [0, last - first)
.