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by pvitz
174 days ago
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From the manual: The control variable in for loops is read only. If you need to change it, declare a local variable with the same name in the loop body.
Also [0]:
Roberto Ierusalimschy
> So what's the rationale to make them constant now? Does it have performance
> reasons?Yes. The old code does an implicit "local x = x" for all loops, in case
you modify 'x'. With the new semantics, the code only does it when you
ask for it. [0] https://groups.google.com/g/lua-l/c/SlAG5QfpTac |
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