don't return `run` invisibly

[bart6114]

Any specific reason why run() returns invisibly?
I personally think the below should automatically call show/print (i.e. not return invisibly).

simmer() %>%
  add_resource("server") %>%
  add_generator("test", t0, at(0)) %>%
  run()

[Enchufa2]

Mmmh... not specially. I supposed that it could be desirable to be able to do something like this:

env %>% run(15) %>% onestep() %>% onestep()

or this:

env <- simmer() %>%
  add_resource("server") %>%
  add_generator("test0", t0, function() 1) %>%
  run(100) %>%
  add_generator("test1", t0, function() 2) %>%
  run(200) %>%
  del_generator("test0") %>%
  run(300)

[bart6114]

If we replace all - not only $run() - invisible(self) with self in the Simmer R6 class we can still do this. And if it isn't saved in a variable it simply calls the $print function:

> simmer() %>% run(15) %>% onestep() %>% onestep()
Simmer environment: anonymous | now: 0 | next: Inf

and

> env<- simmer() %>% run(15) %>% onestep() %>% onestep()
> 

[Enchufa2]

Certainly. When you're right, you're right. 😄