C ++中的变量转储 [英] Variable Dumping in C++

问题描述

有可能对复杂的结构或甚至是C ++中的数组进行转储，以便在视觉上查看它们中包含的内容。

Is it possible to do a 'dump' on complex structures or even arrays in C++, in order to visually be able to check out what they've got inside them?

我想在PHP中类似于print_r（）或var_dump（）。

I'm thinking of something similar to print_r() or var_dump() in PHP.

干杯，
-Fin

Cheers, -Fin

推荐答案

简单的答案是：不，除非你自己手动写这样的例程。

The short answer is: no, unless you manually write such a routine yourself.

这通常不是一个坏主意，但它有常见的问题，如果你经常添加/更改成员与类不同步。这是不可避免的，因为C ++缺少任何形式的自省到 struct 。

Which is often not a bad idea, but it has the usual problems of getting out of sync with the class if you are adding/changing members often. This is unavoidable because C++ lacks any form of introspection into structs.

如果你决定这样，最好的办法是为 std :: ostream&运算符<<<（std :: ostream& os，MyClass const&），这将允许您的类打印到任何IOStreams输出流。

If you decide to go that way, the best thing to do is to write an overload for std::ostream& operator<<(std::ostream& os, MyClass const&), which will enable your class to be printed to any IOStreams output stream.

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