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author | Jason Zaugg <jzaugg@gmail.com> | 2015-06-24 15:19:05 +1000 |
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committer | Jason Zaugg <jzaugg@gmail.com> | 2015-06-24 18:10:42 +1000 |
commit | 1f7417c763fb199cacc6afedc6e54796916fd673 (patch) | |
tree | bd00d7e0e47be310172f01c758c01ca5430063c4 /src/library/scala/sys | |
parent | 73f40564a6b19e8b15f0908c3e24f1a8fe405605 (diff) | |
parent | 1b09e12ef3b3fea1cab56bac893295f74de23b8b (diff) | |
download | scala-1f7417c763fb199cacc6afedc6e54796916fd673.tar.gz scala-1f7417c763fb199cacc6afedc6e54796916fd673.tar.bz2 scala-1f7417c763fb199cacc6afedc6e54796916fd673.zip |
Merge branch '2.11.x' into merge/2.11.x-to-2.12.x-20150624
Diffstat (limited to 'src/library/scala/sys')
-rw-r--r-- | src/library/scala/sys/BooleanProp.scala | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/library/scala/sys/BooleanProp.scala b/src/library/scala/sys/BooleanProp.scala index 74b0a9077b..e5e4668edb 100644 --- a/src/library/scala/sys/BooleanProp.scala +++ b/src/library/scala/sys/BooleanProp.scala @@ -63,12 +63,13 @@ object BooleanProp { def valueIsTrue[T](key: String): BooleanProp = new BooleanPropImpl(key, _.toLowerCase == "true") /** As an alternative, this method creates a BooleanProp which is true - * if the key exists in the map. This way -Dfoo.bar is enough to be - * considered true. + * if the key exists in the map and is not assigned a value other than "true", + * compared case-insensitively, or the empty string. This way -Dmy.property + * results in a true-valued property, but -Dmy.property=false does not. * * @return A BooleanProp with a liberal truth policy */ - def keyExists[T](key: String): BooleanProp = new BooleanPropImpl(key, _ => true) + def keyExists[T](key: String): BooleanProp = new BooleanPropImpl(key, s => s == "" || s.equalsIgnoreCase("true")) /** A constant true or false property which ignores all method calls. */ |