🚀 go-pugleaf

gcato@st6000.sct.edu (Vaughn Cato) wrote:
>template <class T = int> class A;
>
>void f() {
>  A<> *p1; // The legal way to default the argument
>  A *p2;   // Syntax error
>}

This has been discussed by the committee - I think the conclusion was that
allowing the simpler syntax would cause some problems, but I don't remember
off-hand what those problems were.

Perhaps the problem is ambiguity between `<' as less-than and `<' as
the start of a template angle bracket pair, e.g.

	template <int i = 42> struct A { A(int = 0) {} };
	foo(*new A<0>(0));
		// should that be parsed as `foo((*new A) < 0) > 0)'??

?

-- 
Fergus Henderson             |  #define x t=a[i],a[i]=a[m],a[m]=t
                             |  char a[]=" 12345678";main(m,i,j,t){for(i=m;i<
fjh@cs.mu.oz.au              |  9;x,i++)for(x,j=m;--j?(t=a[m-j]-a[m])-j&&t+j:
http://www.cs.mu.oz.au/~fjh  |  main(m+1)*0;);m-9||puts(a+1);} /* 8 queens */

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