本文介绍了在c ++中继承模板类的构造函数的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
在c ++ 11中,可以继承构造函数。我有以下代码(再现示例),无法编译:
In c++11 it is possible to inherit constructors. I have the following code (reproducing example), which fails to compile:
template<class T> class A
{
...
}
template<class T> class B : public A<T>
{
public:
B(int a, int b = 0);
}
template<class T> B::B(int a, int b /* =0 */)
{
...
}
class C : public B<int>
{
public:
using B::B;
}
以下代码不会运行 C
没有构造函数,即 B
不能继承:
The following code doesn't run with the error that C
doesn't have the constructor, i.e. the one from B
is not inherited:
C obj(5);
//or
C obj(5, 3);
推荐答案
Visual Studio 2013不 >支持继承构造函数。有关详细信息,请参见。以下是相关部分:
Visual Studio 2013 does not support inheriting constructors. See Support For C++11 Features for more information. Here's the relevant part:
- 继承构造函数
- Visual Studio 2010:否
- Visual Studio 2012:否
- Visual Studio 2013:否
更新
看起来支持继承构造函数(帽子提示:@yngum)
Looks like support for inheriting constructors was added in the November 2013 CTP (hat tip: @yngum)
这篇关于在c ++中继承模板类的构造函数的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!