ns-internals

R Base 3.6.2 🇮🇩 Bahasa Indonesia

Fungsi dukungan namespace internal. Tidak dimaksudkan untuk dipanggil secara langsung, dan hanya terlihat karena sifat khusus dari namespace dasar.

Syntax

asNamespace(ns, base.OK = TRUE)
getNamespaceInfo (ns, which)
.getNamespaceInfo(ns, which)
importIntoEnv(impenv, impnames, expenv, expnames)
isBaseNamespace(ns)
isNamespace(ns)
namespaceExport(ns, vars)
namespaceImport(self, &#8230;, from = NULL, except = character(0L))
namespaceImportFrom(self, ns, vars, generics, packages,
                    from = "non-package environment",
                    except = character(0L))
namespaceImportClasses(self, ns, vars, from = NULL)
namespaceImportMethods(self, ns, vars, from = NULL)
packageHasNamespace(package, package.lib)
parseNamespaceFile(package, package.lib, mustExist = TRUE)
registerS3method(genname, class, method, envir = parent.frame())
registerS3methods(info, package, env)
setNamespaceInfo(ns, which, val)
.mergeExportMethods(new, ns)
.mergeImportMethods(impenv, expenv, metaname)
.knownS3Generics
loadingNamespaceInfo()
.getNamespace(name)
..getNamespace(name, where)

Arguments

Parameter	Deskripsi
`ns`	string or namespace environment.
`base.OK`	logical.
`impenv`	environment.
`expenv`	namespace environment.
`vars`	character vector.
`generics`	optional character vector.
`self`	namespace environment.
`package`	string naming the package/namespace to load.
`packages`	vector of package names parallel to generics.
`package.lib`	character vector specifying library.
`mustExist`	logical.
`genname`	character.
`class`	character.
`envir, env`	environment.
`info`	a 3-column character matrix.
`which`	character.
`val`	any object.
`…`	character arguments.
`metaname`	the methods table name.
`name`	symbol: name of namespace
`except`	character vector naming symbols to exclude from the import, particularly useful when vars is missing.

Details

packageHasNamespace tidak menunjukkan apakah paket tersebut memiliki namespace (semuanya sekarang memilikinya), melainkan jika paket tersebut memiliki file NAMESPACE, sedangkan paket dasar dan beberapa paket lawas tidak. Tapi kemudian Anda tidak dimaksudkan untuk menggunakannya….

Contoh

Example

# NOT RUN {
nsName <- "stats"
(ns <- asNamespace(nsName)) # <environment: namespace:stats>

## Inverse function of asNamespace() :
environmentName(asNamespace("stats")) # "stats"
environmentName(asNamespace("base"))  # "base"
getNamespaceInfo(ns, "spec")[["name"]] ## -> "stats"
# }
# NOT RUN {
## Only for for the daring ones, trying to get into the bowels :

lsNamespaceInfo <- function(ns, ...) {
    ns <- asNamespace(ns, base.OK = FALSE)
    ls(..., envir = get(".__NAMESPACE__.", envir = ns, inherits = FALSE))
}
allinfoNS <- function(ns) sapply(lsNamespaceInfo(ns), getNamespaceInfo, ns=ns)

utils::str(allinfoNS("stats"))
utils::str(allinfoNS("stats4"))
# }

ns-internals

Syntax

Arguments

Details

Contoh

See Also