Scala equivalent of Ruby's map.each?

Very handy Ruby code:

some_map.each do |key,value|
  # do something with key or value
end

Scala equivalent:

someMap.foreach( entry => {
  val (key,value) = entry
  // do something with key or value
})

Having to add the extra val line bugs me. I couldn't figure out how to state the function arg to extract the tuple, so I'm wondering is there a way to do this, or why is there no foreach that extracts the key and value for me?