Article View: comp.std.c++
Article #299Re: foo() => foo
From: Andrew Koenig
Date: Fri, 03 Aug 1990 14:37
Date: Fri, 03 Aug 1990 14:37
26 lines
1304 bytes
1304 bytes
In article <26717@pasteur.Berkeley.EDU>, krste@ICSI.Berkeley.EDU ( Krste Asanovic) writes:
> Suggestion: If a function can be called with no arguments, then it
> should be possible to call it without using the superfluous empty
> parenthesis.
C++ inherits from C the notion that the unadorned name of a function
can be quietly converted to the address of that function. Allowing
your suggestion would therefore introduce ambiguities. For example:
void f(int);
void f(int (*)());
int g();
main()
{
f(g); // what does this do?
}
As C++ stands now, g can only be interpreted as a pointer to a function
returning int with no arguments. Under your suggestion, it would
be permitted to call g() as well, thus introducing an amgibuity.
--
--Andrew Koenig
ark@europa.att.com
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rutgers!uwm.edu!ux1.cso.uiuc.edu!brutus.cs.uiuc.edu!zaphod.mps.ohio-state.edu!mips!pacbell.com!pacbell!att!dptg!ulysses!andante!alice!ark From: ark@alice.UUCP (Andrew Koenig) Newsgroups: comp.std.c++ Subject: Re: foo() => foo Keywords: function call syntax Message-ID: <11130@alice.UUCP> Date: 3 Aug 90 14:37:08 GMT References: <26717@pasteur.Berkeley.EDU> Organization: AT&T Bell Laboratories, Liberty Corner NJ Lines: 26