What I mean is that when I have a matrix or data frame with 10 rows, if it's newly created row names go from 1 to 10. I want to make sure that if I type a vector with given names (like: c("Jhon","Molly",..."Lucy") it is going to be applied strictly in order as I think about it (1 being replaced by "Jhon" until 10 is replaced by "Lucy") or it could randomly replace each row with any name on my vector?
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Is the order always kept and respected when programming in R?
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