問題描述
假設(shè)我有一個模板類
template <typename T> struct Node
{
// general method split
void split()
{
// ... actual code here (not empty)
}
};
需要在 Triangle 類的情況下專門化這個......類似
Need to specialise this in the Triangle class case.. something like
template <>
struct Node <Triangle*>
{
// specialise the split method
void split() {}
} ;
但我不想想重新重寫整個模板！唯一需要更改的是 split() 方法，僅此而已.
but I don't want to rewrite the entire template over again! The only thing that needs to change is the split() method, nothing more.
推薦答案
您可以在類聲明之外僅為該函數(shù)提供專門化.
You can provide a specialization for only that function outside the class declaration.
template <typename T> struct Node
{
// general method split
void split()
{
// implementation here or somewhere else in header
}
};
//cpp中聲明的函數(shù)原型void splitIntNode( Node & node );
// prototype of function declared in cpp void splitIntNode( Node & node );
template <>
void Node<int>::split()
{
splitIntNode( this ); // which can be implemented
}
int main(int argc, char* argv[])
{
Node <char> x;
x.split(); //will call original method
Node <int> k;
k.split(); //will call the method for the int version
}
如果 splitIntNode 需要訪問私有成員，您可以將這些成員傳遞給函數(shù)而不是整個節(jié)點.
If splitIntNode needs access to private members, you can just pass those members into the function rather than the whole Node.
這篇關(guān)于如果我只想在模板中專門化一種方法，我該怎么做?的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！