Integer--Integer Number Object

Class Integer provides an NIH Class Library object to hold an integer number. This is useful, for example, if one wishes to associate a key object with an integer and store it in a Dictionary. Arithmetic operations on Integer objects have not been provided to discourage their use, due to their relative inefficiency.

CONSTRUCTORS

Integer(long value =0): Constructs an instance of class Integer with the value value.
Integer(istream& strm): Constructs an instance of class Integer with the value read from the input stream strm with istream::operator>>().

ACCESSING INTEGERS

long value() const: Returns the value of this Integer.
long value(long newValue): Sets this Integer to newValue and returns newValue.

SEARCHING

virtual unsigned hash() const: Returns a number suitable for use as a hash table probe.

COMPARING INTEGERS

virtual int compare(const Object& ob) const: Compares this Integer with the argument object ob, which must also be an instance of class Integer. Returns a negative result if this Integer is less than ob, zero if this Integer equals ob, and a positive result if this Integer is greater than ob.

TESTING INTEGERS

virtual bool isEqual(const Object& ob) const: Returns YES if ob is of species Integer and equals this Integer.

COPYING INTEGERS

virtual void deepenShallowCopy(): This function is a no-op for class Integer.

READING AND PRINTING INTEGERS

virtual void printOn(ostream& strm =cout) const: Prints this Integer on output stream strm using ostream::operator<<().
virtual void scanFrom(istream& strm): Assigns the value of this Integer to the value obtained by reading the input stream strm with istream::operator>>().