# ports.ludic — L3 ports: module clock needs the time and declares `port Clock`; module app binds
# it with its own function; clock calls through `Clock.now()` and never names app. A member with a
# default (`day`) may be left out of the bind.
#
# Running it prints:  30 5
import "station/units"
import "station/clock"
import "station/app"
program Ports {
  entry {
    let a = Clock.now()
    advance(-25)
    print(`{a} {hour_of_day()}`)
  }
}