| ordered_dict {collections} | R Documentation |
Ordered Dictionary
Description
ordered_dict creates an ordered dictionary.
Usage
ordered_dict(items = NULL, keys = NULL)
Arguments
items |
a list of items |
keys |
a list of keys, use |
Details
Following methods are exposed:
.$set(key, value) .$get(key, default) .$remove(key, silent = FALSE) .$pop(key, default) .$popitem(last = TRUE) .$has(key) .$keys() .$values() .$update(d) .$clear() .$size() .$as_list() .$print()
-
key: scalar character, environment or function -
value: any R object, value of the item -
default: optional, the default value of an item if the key is not found -
d: an ordered_dict object
See Also
Examples
d <- ordered_dict(list(apple = 5, orange = 10))
d$set("banana", 3)
d$get("apple")
d$as_list() # the order the item is preserved
d$pop("orange")
d$as_list() # "orange" is removed
d$set("orange", 3)$set("pear", 7) # chain methods
[Package collections version 0.3.7 Index]