If I've already opened a Bars Object, does this clear it, so I can reuse it for something else, without worrying about there being any data left over? I know I can just open another Bars object, but I'm always obsessed with computational overhead.
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Specifically, if the symbol has 1000 bars the first time, and it only has 100 bars the second time, will there still be 900 bars left over from the previous use when I use it the second time?