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lang-cpp
constwill not use more RAM than a#define. And for the analog pins, I would define them asconst uint8_t, althoughconst intwould make no difference.constdoesn't actually use more RAM [...] until it is actually used”. You missed my point: most of the time, aconstdoes not use RAM, even when it is used. Then, “this is a multipass compiler”. Most importantly, it is an optimizing compiler. Whenever possible, constants get optimized into immediate operands.