modifyList
Recursively Modify Elements of a List
Description
Recursively modifies elements of list, including the nested list. Elements are identified by their names.
Usage
modifyList(x, val, keep.null = FALSE)
Arguments
| x |
a list object to be modified.
|
| val |
a list object that has components to replace the elements in x.
|
| keep.null |
a logical value. If FALSE (the default), NULL values in val
cause the corresponding element of x to be removed. If TRUE,
such elements are set to NULL.
|
Details
Recursively finds elements in a list. Elements are identified by their names.
- If elements of var exist in x, modifyList modifies the existing element.
- If elements of var do not exist in x, modifyList adds elements to the list x.
Value
returns the modification of the list x with the modified elements that are identified by their names.
See Also
Examples
orig.list <- list(a = 1, b = list(b1 = 2, b2 = TRUE), c = list("iii"))
modifyList(orig.list,
list(a = 3, b = list(b3 = "new b3", b2 = FALSE), c = FALSE))
modifyList(orig.list,
list(b = list(b1 = NULL), c = NULL))
modifyList(orig.list,
list(b = list(b1 = NULL), c = NULL), keep.null = TRUE)