lapply()
is a really useful function but it has some limitations. For example, with lapply()
there is no way to:
- add new elements
- remove existing elements
- change the names of list elements
To overcome these problems we could create a variant of lapply()
than I'm going to call fapply()
(where f
is for flexible). Rather than calling the supplied function with with an element of the list extract with [[
, it will call it with a sub-list extracted with [
.