> a <- as.data.frame(list(1,2,3))
> colnames(a) <- c("a", "b", "c")
> colnames(a)
[1] "X1" "X2" "X3"
> lapply(a, function(x) {print(colnames(x))})
NULL
NULL
NULL
$a
NULL$b NULL
$c NULL
What is lapply doing? Why does it drop the column name of every column it's iterating over? How can I get the column name as a string?
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