make_flow_fn: Explicit cache of a function
In numeract/rflow: Flexible R Pipelines with Caching

Description Usage Arguments Details Value Examples

Explicit cache of a function

1	make_flow_fn(fn, fn_id = NULL, flow_options = get_flow_options())

`fn`	Function to be cached, ideally a pure function.
`fn_id`	Optional id to uniquely identify the function. By default, rflow functions reuse the `cache` if the same function is given. The id allows the user to suppress console messages and to explicitly indicate whether to reuse the old `cache` or create a new one.
`flow_options`	List of options created using `get_flow_options`.

In order to use the functionality of an R6Flow object, the output of make_flow_fn has to be collected first.

The cached version of the function.

fn <- function(x, y) { x + y + 1 }
make_flow_function <- make_flow_fn(fn)
rflow_function <- make_flow_function(2, 3)
flow_result <- rflow_function %>% collect()

# usage with rflow pipes
fn2 <- function(x, y) { x * y }
make_flow_function2 <- make_flow_fn(fn2)
collected_pipe_flow <- make_flow_function(1, 2) %>%
    make_flow_function2(2) %>%
    collect()