RE: [C400-L] dot-indirection and arrow-indirection operators?

[Steven Newson <steven.newson@xxxxxxxxx>]

Ah, I see. I appear to have misunderstood the question and simultaneously
classed you as a newbie :).

Anyway, as far as I'm aware this is a C++ only operator. Here's a snippet of
code that uses it:

class Foo {
public:
        void A(int x) { printf("A=%i\n", x); }
        void B(int x) { printf("B=%i\n", x); }
};

typedef void (Foo::* foo_fn_t) (int x);

int main()
{
        Foo f;
        foo_fn_t func = &foo::A;

        (f.* func)(123);

        func = &foo::B;
        foo *pf = &f;

        (pf->* func)(456);

        return 0;
}

Outputs:

A=123
B=456

Essentially, you use them to dereference a pointer to a member function (or
property) before the indirection operator.

Sorry, for the implied insult....

Steve.


-----Original Message-----
From: Gene_Gaunt@ReviewWorks.com [mailto:Gene_Gaunt@ReviewWorks.com]
Sent: 26 July 2002 13:54
To: c400-l@midrange.com
Subject: RE: [C400-L] dot-indirection and arrow-indirection operators?


Thanks Steven, but what are dot-indirection and arrow-indirection
operators???  They appear in chapter 5's operator precedence and
associativity table at rank level "4" (below dot and arrow operators at
rank level "2").

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