将字符串文字作为参数传递给C ++模板类 [英] Passing a string literal as a parameter to a C++ template class

问题描述

我想要一个在其构造函数中接受两个参数的类。第一个可以是一个int，double或float，所以< typename T> ，第二个总是一个字符串字符串my string * const。

I want a class which takes two parameters in its constructor. The first can be either an int, double or float, so <typename T>, and the second is always a string literal "my string", so I guess const char * const.

任何人都可以给我一些可编译的代码，声明一个简单的类模板并声明一个类的对象？

Can anyone give me some compilable code which declares a simple class template as described and declares an object of that class?

感谢

推荐答案

对不起，C ++目前不支持的字符串文字（或实际文字）作为模板参数。

Sorry, C++ does not currently support the use of string literals (or real literals) as template parameters.

但是重新阅读你的问题，是你在问什么？您不能说：

But re-reading your question, is that what you are asking? You cannot say:

foo <"bar"> x;

但您可以说

template <typename T>
struct foo {
   foo( T t ) {}
};

foo <const char *> f( "bar" );

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