diff options
Diffstat (limited to 'testsuite/tests/arrows/should_compile/arrowdo1.hs')
| -rw-r--r-- | testsuite/tests/arrows/should_compile/arrowdo1.hs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/testsuite/tests/arrows/should_compile/arrowdo1.hs b/testsuite/tests/arrows/should_compile/arrowdo1.hs new file mode 100644 index 0000000000..b70eedd460 --- /dev/null +++ b/testsuite/tests/arrows/should_compile/arrowdo1.hs @@ -0,0 +1,17 @@ +{-# LANGUAGE Arrows #-} + +module ShouldCompile where + +import Control.Arrow + +f :: Arrow a => a (Int,Int,Int) Int +f = proc (x,y,z) -> returnA -< x+y + +g :: Arrow a => Int -> a Int Int +g x = proc y -> returnA -< x*y + +h :: Arrow a => Int -> a (Int,Int) Int +h x = proc (y,z) -> do + a <- f -< (x,y,3) + b <- g (2+x) -< y+a + returnA -< a*b+z |