scala while loop assignment

Question

I'm trying to port some Java code into Scala:

while ((j=f('blah'))>=0) ...

ERROR:"value >= is not a member of Unit"

Is this not possible?

Answer 1

Assignments return () (unit) in Scala. But that's okay because you can put a code block anywhere. You need this instead:

while ({ j=f("blah"); j } >= 0) ...