tests/base_attr_optional.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 import kernel
  16
  17 class A
  18         var i: Int = 99 is optional
  19
  20         var o: Object = 999 is optional
  21 end
  22
  23 var a = new A
  24 a.i.output
  25 a.o.output
  26
  27 a.i = 1
  28 a.o = 10
  29 a.i.output
  30 a.o.output
  31
  32 a.i = null
  33 a.o = null
  34 a.i.output
  35 a.o.output
  36
  37 a = new A(2)
  38 a.i.output
  39 a.o.output
  40
  41 a = new A(3, true)
  42 a.i.output
  43 a.o.output