C ++：如何传递对象数组到函数？ [英] C++: How to pass array of objects into function?

问题描述

我有一个指向数组对象的指针。它看起来像：

I have a pointer to array of objects. It looks like:

MyClass *myClass[ 10 ];
myClass[ 0 ] = new MyClass(); // init for each of myClass[0..9]
myClass[ 0 ]->field1 = "hello";

如何通过引用将myClass传递给函数？

How can I pass "myClass" to a function by reference? I tried a few cases but it didn't work.

推荐答案

如果你真的必须使用数组，

If you really must use an array, then

template<size_t N >
void foo(MyClass (&arr)[N] )
{
  // Access arr[i], size is N
}

...

foo(myClass);

否则，使用 std :: array

template<size_t N >
void foo(std::array<MyClass,N>& arr )
{
  // Access arr[i], size is N or arr.size()
} 

...

std::array<MyClass, 10> myClass = ....;
foo(myClass);

我不会调用数组myClass。

I would not call an array "myClass" though.

这篇关于C ++：如何传递对象数组到函数？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IT屋！