<https://kotlinlang.slack.com/archives/general/p14...
# announcements
i
https://kotlinlang.slack.com/archives/general/p1467331387003692 We had
require(boolean, message)
before 1.0, but have dropped it. It was so tempting to write
require(n > 0, "expected n to be positive but was $n")
and get your message constructed unnoticeably every time, even when you don't need it.