Merge: doc: fixed some typos and other misc. corrections
[nit.git] / tests / base_null.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 redef fun output do 10.output
19 end
20
21 var a: Object = new A
22 var na: nullable Object = new A
23 var nn: nullable Object = null
24
25 (null == a).output
26 (null == na).output
27 (null == nn).output
28 (null == null).output
29
30 '\n'.output
31
32 null.is_same_instance(a).output
33 null.is_same_instance(na).output
34 null.is_same_instance(nn).output
35 null.is_same_instance(null).output
36
37 '\n'.output
38
39 (null != a).output
40 (null != na).output
41 (null != nn).output
42 (null != null).output