What kinds of operator overloads does Delphi support?

Question

I wonder what sort of operator overloads are possible (and with what version of Delphi)? Thanks to Hallvard\'s great write-up on operator overloading, I know of :

Answer 1

I just put my notes online of a session on nullable types with operator overloading that I gave during a few conferences.

It now contains a table of the operators, the names and what works/doesn't work. WordPress initially malformed that table, but I managed to restore it.

You can also download the full set of slides and source code demos.

In short:

• The documentation (even the DocWiki) is not complete, and note reliable
• You cannot overload the bitwise not operator, as BitwiseNot is not supported by the compiler. You have to overload the logical not operator in stead.
• Overload operators pairwise where applicable
• Be aware of existing operators
• Be very careful when implementing implicit operators

Hope this helps you. Let me know if you need more info: I have done quite a bit of production work with operator overloading.

--jeroen