WHUI! (was Re: [Python-Dev] Proposal: C API Macro to decref andset to NULL)

[Jim Fulton]

Jeremy Hylton wrote:
>>I still don't like it, because it hides the return.
> 
> 
> It should be used in the core, but you don't have to use it in your own
> code.
> 
> 
>>I'd rather do:
>>
>>	if (self->foo != NULL && (vret = visit(self->foo, arg)))
>>		return vret;
> 
> 
> This violates the Python C style by putting an assignment in a conditional.

Where is this documented?  Assignments in conditionals are used widely
in the C sources, including such places as gcmodule.c, object.c, and
typeobject.c.

Jim

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