class
std::ctype_base
<locale>
Base class for ctype
This is not a
facet type, but the base class that defines the
mask bitmask member type to be inherited by
facet class ctype:
1 2 3 4 5 6 7 8
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class ctype_base {
public:
enum mask { // numeric values only as example of possible bitmask values:
space=1<<0, print=1<<1, cntrl=1<<2, upper=1<<3, lower=1<<4,
alpha=1<<5, digit=1<<6, punct=1<<7, xdigit=1<<8,
alnum=alpha|digit, graph=alnum|punct
};
};
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See
ctype::mask for a description of the meaning of each
enum label in the
ctype locale facet.