Something like (with "variable declaration in when...

# language-proposals

[dmitry.petrov]

Something like (with "variable declaration in when subject" as a not-implemented yet secret sauce):

when (val str = ...) {
  "foo" -> foo()
  if str.contains("bar") -> bar()
  if "baz" in str -> baz()
}

[voddan]

What is that if doing up there?

[dmitry.petrov]

disregard it; it's somewhat ambiguous with if expression

[dmitry.petrov]

simpleWhenExpression "if" expression
or probably better
simpleWhenExpression "where" expression