memory-management - Lua - 数一数。对表的引用

Question

Lua 文档说

When a program has no references to a table left, Lua memory management will eventually delete the table and reuse its memory.

我的问题是:是否可以在运行时计算对特定表的引用数？

Answer 1

您可以使用调试库找到对 Lua 值的所有引用。查看这些消息:

• http://lua-users.org/lists/lua-l/2012-03/msg00479.html
• http://lua-users.org/lists/lua-l/2012-04/msg00758.html

下面链接中的 luatraverse 库很好地解决了这个问题! http://code.matthewwild.co.uk/luatraverse/summary