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#' Check that all elements of a list are equal
#'
#' From StackOverflow: https://tinyurl.com/list-elems-equal-r
#'
#' @param x A list.
#'
#' @return Either `TRUE` or `FALSE`.
#' @noRd
all_equal_list <- function(x) {
sum(duplicated.default(x)) == length(x) - 1L
}
#' Determine acceptable names for augment output
#'
#' @description Given a data frame (or tibble), and a model object, makes a
#' character vector of acceptable columns names for augment output. This
#' includes:
#'
#' - Any column names of the passed dataset
#' - Any syntactically correct column names generated by calling
#' [stats::model.frame()] on the object in question.
#'
#' @param object A model object.
#' @param passed_data The dataset used to create the model object.
#'
#' @return A vector of colnames that are acceptable in augment output.
#' @export
#'
acceptable_augment_colnames <- function(object, passed_data) {
UseMethod("acceptable_augment_colnames")
}
acceptable_augment_colnames.default <- function(object, passed_data) {
safe_mf <- purrr::possibly(stats::model.frame, NULL)
mf <- safe_mf(object)
mf_cols <- if (is.data.frame(mf)) colnames(mf) else character(0)
c(mf_cols, make.names(mf_cols), colnames(passed_data))
}
acceptable_augment_colnames.poLCA <- function(object, passed_data) {
c(colnames(object$x), colnames(object$y))
}
#' Check whether or not a data-frame-like object has rownames
#'
#' @param df A data frame
#'
#' @return Logical indicating if `df` has rownames. If `df` is a tibble,
#' returns `FALSE`. If `df` is a data.frame, return `FALSE` if the rownames
#' are simply row numbers. If the rownames are anything other than the
#' return row numbers, returns `TRUE`.
#' @export
has_rownames <- function(df) {
if (tibble::is_tibble(df))
return(FALSE)
any(rownames(df) != as.character(1:nrow(df)))
}
all.equal.tbl_df <- function(target, current, ...) {
df_target <- as.data.frame(target)
df_current <- as.data.frame(current)
isTRUE(all.equal(df_target, df_current))
}
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