setValidity("FixedNumberParam", function(object) {
msg <- character(0)
centerx <- centers(object)
if (is.integer(centerx)) {
if (!.positive_number(centerx)) {
msg <- c(msg, "integer 'centers' must be a positive scalar")
}
}
if (length(msg)) {
return(msg)
}
TRUE
})
#' @export
setMethod("centers", "FixedNumberParam", function(x, n=NULL) {
xcenters <- x@centers
if (is.integer(xcenters) || is.null(n)) {
xcenters
} else {
as.integer(round(xcenters(n)))
}
})
#' @export
setReplaceMethod("centers", "FixedNumberParam", function(x, value) {
x@centers <- value
x
})
#' @export
setMethod("show", "FixedNumberParam", function(object) {
callNextMethod()
cat(sprintf("centers: %s\n", if (is.function(object@centers)) "variable" else object@centers))
})
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