Nothing
mssg <- function(v, ...) if (v) message(...)
tc <- function(l) Filter(Negate(is.null), l)
tcnull <- function(x) if (all(sapply(x, is.null))) NULL else x
pluck <- function(x, name, type) {
if (missing(type)) {
lapply(x, "[[", name)
} else {
vapply(x, "[[", name, FUN.VALUE = type)
}
}
`%||%` <- function(x, y) if (is.null(x) || length(x) == 0) y else x
`%|lst|%` <- function(x, y) if (length(unlist(x)) == 0) y else x
strtrim <- function(str) {
gsub("^\\s+|\\s+$", "", str)
}
str_extrct <- function(string, pattern) {
regmatches(string, regexpr(pattern, string))
}
assert <- function(x, y) {
if (!is.null(x)) {
if (!class(x) %in% y) {
stop(deparse(substitute(x)), " must be of class ",
paste0(y, collapse = ", "), call. = FALSE)
}
}
}
check_uid <- function(x) {
if (!is.null(x)) {
greps <- grepl("ELEMENT_GLOBAL", x)
if (any(!greps)) {
stop("one or more 'uid's appear not to be NatureServe ID's:\n",
paste0(x[!greps], collapse=", "),
call. = FALSE)
}
}
}
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