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author | Brian McKenna <brian@simpleenergy.com> | 2014-09-07 12:33:52 -0600 |
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committer | Brian McKenna <brian@brianmckenna.org> | 2015-08-11 17:13:34 +1000 |
commit | 5bd8ea0edffe7b725e5fa665a82a5795d5dafe8f (patch) | |
tree | 1b41ee5ffa3a1be3fa7881d0fa9cd2665962260b /test/debug/buildmanager | |
parent | 462e22d2f25bb9432c5a1e7bf20f391e6424f7a9 (diff) | |
download | scala-5bd8ea0edffe7b725e5fa665a82a5795d5dafe8f.tar.gz scala-5bd8ea0edffe7b725e5fa665a82a5795d5dafe8f.tar.bz2 scala-5bd8ea0edffe7b725e5fa665a82a5795d5dafe8f.zip |
SI-6806 Add an @implicitAmbiguous annotation
Example usage:
trait =!=[C, D]
implicit def neq[E, F] : E =!= F = null
@annotation.implicitAmbiguous("Could not prove ${J} =!= ${J}")
implicit def neqAmbig1[G, H, J] : J =!= J = null
implicit def neqAmbig2[I] : I =!= I = null
implicitly[Int =!= Int]
Which gives the following error:
implicit-ambiguous.scala:9: error: Could not prove Int =!= Int
implicitly[Int =!= Int]
^
Better than what was previously given:
implicit-ambiguous.scala:9: error: ambiguous implicit values:
both method neqAmbig1 in object Test of type [G, H, J]=> Main.$anon.Test.=!=[J,J]
and method neqAmbig2 in object Test of type [I]=> Main.$anon.Test.=!=[I,I]
match expected type Main.$anon.Test.=!=[Int,Int]
implicitly[Int =!= Int]
^
Diffstat (limited to 'test/debug/buildmanager')
0 files changed, 0 insertions, 0 deletions