maybe_map: Apply a one-track function to a two-track argument.
In Teresa00/hfmAnnotation: HFM Internal Package for Annotations

Description Usage Arguments Format Value See Also Examples

Similar to "bind" but maybe_map passes its argument to the continuation function and evaluates the resulting expression immediately rather than wrapping it in an anonymous function to be evaluated later. This is particular useful when using magrittr piping operators to compose chains of function calls.

1	maybe_map(m, f)

`m`	A Maybe (two-track) value.
`f`	A function taking a non-optional (one-track) argument and returning a non-optional (one-track) value.

maybe_map :: Maybe a -> (a -> b) -> Maybe b

A Maybe (two-track) value

Other Maybe functions: as_maybe, is_nothing, maybe_apply, maybe_bind, maybe_default, maybe_map_2, maybe_map_3, maybe_map_4, maybe_map_5, maybe_then, maybes_collapse, maybes_partition

library("magrittr")
library(assertthat)
Just(1) %>% maybe_map(is.numeric) # Just(TRUE)
Just("cat") %>% maybe_map(is.numeric) # Just(FALSE)
Nothing() %>% maybe_map(is.numeric) # Nothing()