假设我有一些指针,我想将其重新解释为静态维度数组引用:
Suppose I have some pointer, which I want to reinterpret as static dimension array reference:
double *p;
double (&r)[4] = ?(p); // some construct?
// clarify
template< size_t N> void function(double (&a)[N]);
...
double *p;
function(p); // this will not work.
// I would like to cast p as to make it appear as double[N]
可以这样做吗?我该怎么做?
Is it possible to do so? how do I do it?
太丑了:
double arr[4];
double* d = arr;
double (&a)[4] = *static_cast<double(*)[4]>(static_cast<void*>(d));
确保数组类型与指针最初来自的类型相匹配.
Be sure the array type matches what the pointer originally came from.
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