Nothing
int <- as.integer
is_string <- function(x) {
is.character(x) && length(x) == 1 && !is.na(x)
}
is_string_or_null <- function(x) {
is.null(x) || is_string(x)
}
is_count <- function(x) {
is.integer(x) && length(x) == 1 && !is.na(x)
}
is_type <- function(x) {
is_count(x)
}
is_class <- function(x) {
is_count(x)
}
safe_examples <- function() {
!is_cran_check() && is_online()
}
is_cran_check <- function () {
if (identical(Sys.getenv("NOT_CRAN"), "true")) {
FALSE
} else {
Sys.getenv("_R_CHECK_PACKAGE_NAME_", "") != ""
}
}
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