Why do several of the standard operators not have standard functors?

Question

We have:

• std::plus (+)
• std::minus (-)
• std::multiplies (*)

Answer 1

Most likely, nobody on the Standard committee thought that they would be useful. And with C++0x's lambda support, then none of them are useful.

Edit:

I'm not saying that they have no use- more that nobody on the Committee actually thought of that use.