2D矩阵和重载operator（）/丑陋语法 [英] 2D matrix and overloading operator() / ugly syntax

问题描述

我在我的一个项目中使用了一个2D矩阵。这类似于 C ++常见问题Lite 。

I'm using a 2D matrix in one of my projects. It's something like it is suggested at C++ FAQ Lite.

整洁的是你可以这样使用：

The neat thing is that you can use it like this:

int main()
{
  Matrix m(10,10);
  m(5,8) = 106.15;
  std::cout << m(5,8);
  ...
}

现在，并且每个顶点具有公共（仅为了示例的简单）指向如上所述的2D矩阵的指针。现在我有一个非常丑的语法来访问它。

Now, I have a graph composed of vertices and each vertex has a public (just for simplicity of the example) pointer to 2D matrix like above. Now I do have a pretty ugly syntax to access it.

(*sampleVertex.some2DTable)(0,0) = 0; //bad
sampleVertex.some2DTable->operator()(0,0) = 0; //even worse...

可能我缺少一些语法糖由于我缺乏经验操作符重载。是否有更好的解决方案？

Probably I'm missing some syntactic sugar here due to my inexperience with operator overloading. Is there a better solution?

推荐答案

1. 考虑使用引用而不是指针



2. 考虑为返回2D矩阵引用的顶点创建一个矩阵包装类的getter或实例（提供，它不能为null）。

1. Consider using references instead of pointers (provided, it can't be null and you can initialize in the constructor).

2. Consider making a getter or an instance of a matrix wrapper class for a vertex that returns a reference to 2D matrix (provided, it can't be null).

sampleVertex.some2DTable()(0,0) = 0;
sampleVertex.some2DTableWrap(0,0) = 0;

- 要证明经历所有的麻烦。

However, to me it sounds like a non-issue to justify going through all the trouble.

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