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From: jason@cygnus.com (Jason Merrill)
Subject: Re: friends and local classes
In-Reply-To: Viktor Yurkovsky's message of 25 Jan 1995 15:41:06 GMT
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Date: Wed, 25 Jan 1995 20:21:50 GMT
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Xref: nntp.gmd.de comp.lang.c++:88029 comp.std.c++:11257

>>>>> Viktor Yurkovsky <n4mation@panix.com> writes:

> swillden@fcom.cc.utah.edu (Shawn Willden) wrote:

>> Just make a local class with a static function if you need a local function.
>> 
>> void functionWithLocalFunction()
>> {
>> struct Local
>> {
>> int static compare(const void* a, const void* b)
>> {
>> const int *intA = reinterpret_cast<const int*>(a);
>> const int *intB = reinterpret_cast<const int*>(b);
>> if (*intA == *intB)
>> return 0;
>> else if (*intA < *intB)
>> return -1;
>> else
>> return 1;
>> }
>> };
>> 
>> //...
>> qsort(array, sizeof(array)/sizeof(array[0]), sizeof(array),
>> &Local::compare);
>> }
>> 
>> ...

> Hmm.. This creates a rather large inline, doesn't it?

The compiler is under no obligation to inline calls.  And since the
function is used through a pointer, the compiler would have to be mighty
clever to do so.

Jason