MySQL++: comparable.h Source File
comparable.h
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Copyright (c) 1998 by Kevin Atkinson, (c) 1999-2001 by MySQL AB, and
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#if !defined(MYSQLPP_COMPARABLE_H)
#define MYSQLPP_COMPARABLE_H
namespace mysqlpp {
template <class T>
class Comparable
{
public:
bool operator ==(const T& other) const
{
return !compare(other);
}
bool operator !=(const T& other) const
{
return compare(other);
}
bool operator <(const T& other) const
{
return compare(other) < 0;
}
bool operator <=(const T& other) const
{
return compare(other) <= 0;
}
bool operator >(const T& other) const
{
return compare(other) > 0;
}
bool operator >=(const T& other) const
{
return compare(other) >= 0;
}
protected:
virtual ~Comparable() { }
virtual int compare(const T& other) const = 0;
};
}
#endif // !defined(MYSQLPP_COMPARABLE_H)
mysqlpp::Comparable::compare
virtual int compare(const T &other) const =0
Compare this object to another of the same type.
mysqlpp::Comparable::~Comparable
virtual ~Comparable()
Destroy object.
Definition: comparable.h:87
mysqlpp::Comparable::operator<
bool operator<(const T &other) const
Returns true if "other" is less than this object.
Definition: comparable.h:56
mysqlpp::Comparable::operator !=
bool operator !=(const T &other) const
Returns true if "other" is not equal to this object.
Definition: comparable.h:50
mysqlpp::Comparable
Mix-in that gives its subclass a full set of comparison operators.
Definition: comparable.h:40
mysqlpp::Comparable::operator==
bool operator==(const T &other) const
Returns true if "other" is equal to this object.
Definition: comparable.h:44
mysqlpp::Comparable::operator >=
bool operator >=(const T &other) const
Returns true if "other" is greater than or equal to this object.
Definition: comparable.h:74
mysqlpp::Comparable::operator<=
bool operator<=(const T &other) const
Returns true if "other" is less than or equal to this object.
Definition: comparable.h:62
mysqlpp::Comparable::operator >
bool operator >(const T &other) const
Returns true if "other" is greater than this object.
Definition: comparable.h:68