Iterate could return invisibly

[dfalbel]

Iterate will always return a NULL when finishing the iteration. Can we make this invisible?

library(flowery)

iterate(
  for (x in as_iterator(1:3)) {
    print(x)
  }
)
#> [1] 1
#> [1] 2
#> [1] 3
#> NULL

^{Created on 2019-04-17 by the reprex package (v0.2.1)}

[lionel-]

That makes sense, this would be consistent with for.

[dfalbel]

Ok! I can make a PR for this later today