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Hi, List!

I periodically find Lua-based projects that do "dynamic update" (one of them - Celedev - was announced on this list less than a day ago with a great video :)). These projects update code in runtime while application is still running.

I am wondering, what techniques are used to dynamically update Lua code without breaking normal execution of a program?

There are a lot of caveats, for example what if program stores some non-constant data in global variables that are initialized in the beginning of the script? Simply reloading the script will reset that global variables to initial values...