Why is this not tail recursive?

[Peter Wolf]

Hi, why does @tailrec complain here?  It says getFoo(page+1) is not in tail recursive position. 

class Foo
def getFoo(page: Int, pageSize: Int): Seq[Foo] = ???

@tailrec
def getFoo(page: Int): Seq[Foo] = {
  val foos = getFoo(page,pageSize)
  if(foos.size >= pageSize) foos else foos ++ getFoo(page+1)
}

[Dennis Haupt]

in "foos ++ getFoo(page+1)"

the last function to be called is "++", not "getFoo"

 

 

 

Gesendet: Donnerstag, 05. Januar 2017 um 22:51 Uhr
Von: "Peter Wolf" <opu...@gmail.com>
An: scala-user <scala...@googlegroups.com>
Betreff: [scala-user] Why is this not tail recursive?

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[Peter Wolf]

Right!  Duh!  

Thanks

P

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