Tools.h++ Manual

104011 Tandem Computers Incorporated 21-27
21
Public member functions void clearBit(size_t i);
Clears (i.e., sets to FALSE ) the bit with index i . The index i must be between
0 and the length of the vector less one. No bounds checking is performed. The
following are equivalent, although clearBit(size_t) is slightly smaller and
faster than using operator()(size_t) :
a(i) = FALSE;
a.clearBit(i);
const RWByte* data() const;
Returns a const pointer to the raw data of self. Should be used with care.
size_t firstFalse() const;
Returns the index of the first OFF (False) bit in self. Returns RW_NPOS if there
is no OFF bit.
size_t firstTrue() const;
Returns the index of the first ON (True) bit in self. Returns RW_NPOS if there is
no ON bit.
unsigned hash() const;
Returns a value suitable for hashing.
RWBoolean isEqual(const RWBitVec& v)
const;
Returns TRUE if self and v have the same length and if each bit of self is set to
the same value as the corresponding bit in v . Otherwise, returns FALSE .
size_t length() const;
Returns the number of bits in the vector.
ostream& printOn(ostream& s) const;
Print the vector v on the output stream s . See the example above for a sample
of the format.
void resize(size_t N);
Resizes the vector to have length N . If this results in a lengthening of the
vector, the additional bits will be set to FALSE .
istream& scanFrom(istream&);
Read the bit vector from the input stream s . The vector will dynamically be
resized as necessary. The vector should be in the same format printed by
member function printOn(ostream&) .