奇怪的C ++语法 [英] Strange C++ syntax

问题描述

我有8年的编码经验，但是我从未见过将运算符[]作为参数传递给函数定义.

I have 8 years of coding experience, but I have never seen the operator [] passed as a parameter to the function definition.

例如，以下代码(来自开源项目):

For example, the following code (from an open source project):

bree::porder(m_root, [] (treenode* node) { delete node; }); 

在我的编码生涯中，我始终将[]定义为运算符重载程序，而不是参数.

Throughout my coding life, I have always defined [] as an operator overloader, not as a parameter.

那么，这种新语法意味着什么?

So what does this new syntax signify?

我正在使用Visual Studio 2003附带的编译器.如何更改上面的代码，使其可以在VS 2003中进行编译?

I am using the compiler that comes with Visual Studio 2003. How can I change the above code so that it will compile in VS 2003?

推荐答案

那是c ++

That is a c++ lambda you could replace the code with a function object of the same definition. The link shows two examples one using Functor and one using a lambda.

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