modifyInList: Modify elements in a list file.
In largeList: Serialization Interface for Large List Objects

Description Usage Arguments Details Value See Also Examples

Modify elements in a list file.

1	modifyInList(file, index, object)

`file`	Name of file.
`index`	A numeric, logical or character vector.
`object`	A list consisting of replacement values.

It modifies elements with given indices by replacement values provided in parameter object. If length of replacement values is shorter than length of indices, values will be used circularly. This function may relocate all the data in the stored file, thus can be very slow! Please consider to call this function batchwise instead of one by one.
When it takes long time to process, some verbose info will be printed to console, which can be switched off by setting options(list(largeList.report.progress = FALSE)).

invisible TRUE if no error occurs.

largeList

list_1 <- list("A" = c(1,2), "B" = "abc", list(1, 2, 3))
saveList(object = list_1, file = "example.llo")

# by numeric indices
modifyInList(file = "example.llo", index = c(1,2), object = list("AA","BB"))

# by names
modifyInList(file = "example.llo", index = c("AA","BB"), object = list("A","B"))

# by logical indices
modifyInList(file = "example.llo", index = c(TRUE, FALSE, TRUE), object = list("A","B"))