File: listToDfOneRow.R

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r-cran-paramhelpers 1.12-1
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# @title Convert a list to a data.frame with one row
#
# @description 
# Convert a list of vectors or scalars to a \code{data.frame} with only one row. Names of the columns correspond to
# the names of elements in the list. If a vector is one list element it is spread over multiple 
# columns and named sequentially, e.g. \code{a = c(5,7)} becomes \code{data.frame(a1 = 5, a2 = 7)}.
#
# @param l [\code{list}]\cr
#  of atomic values of vectors.
# @return [\code{data.frame}] with only one row, containing the list elements.
listToDfOneRow = function(l) {
  assertList(l, min.len = 1)
  lapply(l, assert_atomic_vector)
  l = lapply(seq_along(l), function(x) t(unlist(l[x])))
  data.frame(l)
}