1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
### =========================================================================
### Handle SparseArray options
### -------------------------------------------------------------------------
###
### Nothing in this file is exported.
###
### Must return a named list.
.get_SparseArray_options <- function()
{
SparseArray_options <- getOption("SparseArray")
if (is.null(SparseArray_options))
return(setNames(list(), character(0)))
if (!is.list(SparseArray_options) || is.null(names(SparseArray_options)))
stop(wmsg("invalid 'getOption(\"SparseArray\")' ",
"(should be a named list)"))
SparseArray_options
}
get_SparseArray_option <- function(name, default=NULL)
{
stopifnot(isSingleString(name))
SparseArray_options <- .get_SparseArray_options()
if (name %in% names(SparseArray_options))
return(SparseArray_options[[name]])
default
}
set_SparseArray_option <- function(name, value)
{
stopifnot(isSingleString(name))
SparseArray_options <- .get_SparseArray_options()
prev_value <- SparseArray_options[[name]]
SparseArray_options[name] <- list(value)
options(SparseArray=SparseArray_options)
invisible(prev_value)
}
SparseArray_option_is_set <- function(name)
{
stopifnot(isSingleString(name))
SparseArray_options <- .get_SparseArray_options()
name %in% names(SparseArray_options)
}
|
