dict_add(dictionary, key, value)This function returns the result of adding the association
[key, value] to the dictionary dictionary. If
key already exists in dictionary, then dict_add()
replaces the value of that key with value.
Examples:
dict_add(#[["foo", "bar"]], 3, 'quux)
=> #[["foo", "bar"], [3, 'quux]]
dict_add(#[["foo", 1], ["bar", 2], ["baz", 3]], "bar", 4)
=> #[["foo", 1], ["bar", 4], ["baz", 3]]