is_string <- function(x) {
is.character(x) && length(x) == 1 && !is.na(x)
}
is_character <- function(x) {
is.character(x) && !any(is.na(x))
}
is_character_or_null <- function(x) {
is.null(x) || is_character(x)
}
is_flag <- function(x) {
is.logical(x) && length(x) == 1 && !is.na(x)
}
is_count <- function(x) {
is.numeric(x) && length(x) == 1 && !is.na(x) &&
as.integer(x) == x
}
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.