Originally Posted by Torhal
If you're doing something computationally expensive (such as an often-used loop or polling the combat log), you'll want to avoid using select() and use the placeholder "_" variable name.
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I don't really see why, since its still gonna overwrite _ variable all the time the event happens, and since you don't use it its just a waste of memory and processor time. And select only gets the parameters you'll need and use, but ofc calling the select itself is also uses resources.