main_testing4/knight_test4.scala
author Christian Urban <christian.urban@kcl.ac.uk>
Mon, 02 Nov 2020 02:31:44 +0000
changeset 347 4de31fdc0d67
parent 296 testing3/knight_test4.scala@12dc251fc47e
child 403 ffce7b61b446
permissions -rw-r--r--
updated
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
347
4de31fdc0d67 updated
Christian Urban <christian.urban@kcl.ac.uk>
parents: 296
diff changeset
     1
import CW9a._
220
3020f8c76baa updated
Christian Urban <urbanc@in.tum.de>
parents:
diff changeset
     2
3020f8c76baa updated
Christian Urban <urbanc@in.tum.de>
parents:
diff changeset
     3
val f_urban = (x:(Int, Int)) => if (x._1 > 3) Some(List(x)) else None
3020f8c76baa updated
Christian Urban <urbanc@in.tum.de>
parents:
diff changeset
     4
3020f8c76baa updated
Christian Urban <urbanc@in.tum.de>
parents:
diff changeset
     5
assert(first(List((1,0),(2,0),(3,0),(4,0)), f_urban) == Some(List((4,0))))
3020f8c76baa updated
Christian Urban <urbanc@in.tum.de>
parents:
diff changeset
     6
assert(first(List((1,0),(2,0),(3,0)), f_urban) == None)