Difference between revisions of "Cpp Coding Standards/FDESIGN/CanOp"
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The operators '''&&''', '''||''' and ''',''' (comma) should never be overloaded. | The operators '''&&''', '''||''' and ''',''' (comma) should never be overloaded. | ||
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Latest revision as of 17:10, 14 December 2009
Contents
Canonical Operators (CanOp)
Details
If you overload an operator, always give it its canonical signature and semantic, that is the same one, as if it would be manipulating integers.
Arithmetic Operators
Assignment operators return a non const reference:
T & T::operator=(const T &);
If you provide an arithmetical operator, provide the assignment form as well. That is together with
T T::operator+(const T &) const;
provide
T & operator+=(const T &);
Boolean Operators
Boolean operators always return bool, not int:
bool operator<(const T&, const T&);
Exceptions
The shift operators << and >> are usually overloaded in a different way, not resembling their use on integers.
The operators &&, || and , (comma) should never be overloaded.
