在 gcc 上将成员函数指针传递给模板化成员函数时遇到问题
我在将成员函数指针传递给 gcc 上的模板化成员函数时遇到问题。有谁知道如何修改下面的代码以使 gcc 接受我想要做的事情？
class Foo
{
public:
template <class C, class R>
void Execute(R(typename C::*memFn)())
{
}
};
尝试编译代码时出现以下错误：
test.cpp:40: error: 'memFn' was not declared in this scope
test.cpp:40: error: expected primary-expression before '(' token
test.cpp:40: error: expected identifier before '*' token
test.cpp:40: error: expected '(' before '*' token
test.cpp:40: error: 'memFn' was not declared in this scope
test.cpp:40: error: variable or field 'Execute' declared void
我使用的 gcc 版本是 4.4.2。
非常感谢您的帮助！
I'm having problem passing member function pointers to templatized member function on gcc. Does anyone know how to modify the code below to get gcc to accept what I am trying to do?
class Foo
{
public:
template <class C, class R>
void Execute(R(typename C::*memFn)())
{
}
};
I get the following errors when trying to compile the code:
test.cpp:40: error: 'memFn' was not declared in this scope
test.cpp:40: error: expected primary-expression before '(' token
test.cpp:40: error: expected identifier before '*' token
test.cpp:40: error: expected '(' before '*' token
test.cpp:40: error: 'memFn' was not declared in this scope
test.cpp:40: error: variable or field 'Execute' declared void
The version of gcc that I am using is 4.4.2.
Thank you very much for your help!
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评论（1）
您不需要
typename。删除它，它应该可以工作。 （我在 gcc 4.3.2 上测试过）。You don't need
typename. Remove that and it should work. (I tested it on gcc 4.3.2).