Returns the filter_list's number of filters

Returns the filter_list's number of filters

# S4 method for tiledb_filter_list
nfilters(object)

Arguments

object	tiledb_filter_list

Value

integer number of filters

Examples

flt <- tiledb_filter("ZSTD")
#> Error in version(): could not find function "version"
tiledb_filter_set_option(flt, "COMPRESSION_LEVEL", 5)
#> Error in is(object, "tiledb_filter"): object 'flt' not found
filter_list <- tiledb_filter_list(c(flt))
#> Error in version(): could not find function "version"
nfilters(filter_list)
#> Error in (function (classes, fdef, mtable) {    methods <- .findInheritedMethods(classes, fdef, mtable)    if (length(methods) == 1L)         return(methods[[1L]])    else if (length(methods) == 0L) {        cnames <- paste0("\"", vapply(classes, as.character,             ""), "\"", collapse = ", ")        stop(gettextf("unable to find an inherited method for function %s for signature %s",             sQuote(fdef@generic), sQuote(cnames)), domain = NA)    }    else stop("Internal error in finding inherited methods; didn't return a unique method",         domain = NA)})(list(structure("standardGeneric", package = "methods")), new("standardGeneric",     .Data = function (object)     standardGeneric("nfilters"), generic = structure("nfilters", package = "tiledb"),     package = "tiledb", group = list(), valueClass = character(0),     signature = "object", default = NULL, skeleton = (function (object)     stop("invalid call in method dispatch to 'nfilters' (no default method)",         domain = NA))(object)), <environment>): unable to find an inherited method for function ‘nfilters’ for signature ‘"standardGeneric"’