Do Lua variables lose their value between script calls?

In a C app when I call a Lua script, do the varia开发者_JS百科bles in the code stay with the same value when I call the script again later?

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They will still exist in the lua state you created until you close that state. The variables are tied to the state not the script file.

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As noted in the comments local variables will be garbage collected when they go out of scope. A further caveat is that Lua supports closures and upvalues so the scope may not always be completely obvious.