[ Example:
template<const int* pci> struct X { /* ... */ };
int ai[10];
X<ai> xi;
struct Y { /* ... */ };
template<const Y& b> struct Z { /* ... */ };
Y y;
Z<y> z;
template<int (&pa)[5]> struct W { /* ... */ };
int b[5];
W<b> w;
void f(char);
void f(int);
template<void (*pf)(int)> struct A { /* ... */ };
A<&f> a;
template<auto n> struct B { /* ... */ };
B<5> b1; B<'a'> b2; B<2.5> b3;
— end example ]
[ Note: A string literal is not an acceptable template-argument. [ Example:
template<class T, const char* p> class X {
/* ... */
};
X<int, "Studebaker"> x1;
const char p[] = "Vivisectionist";
X<int,p> x2;
— end example ] — end note ]
[ Note: The address of an array element or non-static data member is not an acceptable template-argument. [ Example:
template<int* p> class X { };
int a[10];
struct S { int m; static int s; } s;
X<&a[2]> x3; X<&s.m> x4; X<&s.s> x5; X<&S::s> x6;
— end example ] — end note ]
[ Note: A temporary object is not an acceptable template-argument when the corresponding template-parameter has reference type. [ Example:
template<const int& CRI> struct B { /* ... */ };
B<1> b2;
int c = 1;
B<c> b1;
— end example ] — end note ]
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