tests/test_map_closure_default.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2009 Jean Privat <jean@pryen.org>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 redef class Map[K, V]
  18         fun get(k: K): V
  19                 with default: V do abort
  20         do
  21                 if has_key(k) then return self[k]
  22                 var d = default
  23                 self[k] = d
  24                 return d
  25         end
  26 end
  27
  28 var h = new HashMap[String, String]
  29 h["bleu"] = "blue"
  30
  31 print "B:"
  32
  33 print h.has_key("bleu")
  34 var v = h.get("bleu") with do
  35         print "Error"
  36         abort
  37 end
  38 print v
  39
  40 print "R:"
  41
  42 print h.has_key("rouge")
  43 v = h.get("rouge") with do continue "red"
  44 print v
  45 print h.has_key("rouge")
  46 v = h.get("rouge")
  47 print v
  48
  49 print "N:"
  50
  51 print h.has_key("noir")
  52 v = h.get("noir") with do break "black"
  53 print v
  54 print h.has_key("noir")
  55
  56 #alt1#v = h.get("noir")