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author | Richard Eisenberg <eir@cis.upenn.edu> | 2015-12-24 14:33:19 -0500 |
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committer | Richard Eisenberg <eir@cis.upenn.edu> | 2015-12-24 14:37:39 -0500 |
commit | 2db18b8135335da2da9918b722699df684097be9 (patch) | |
tree | 660dd90916aa6568694bbe39cdab83c7af98c5d7 /testsuite/tests/typecheck/should_fail/mc21.stderr | |
parent | 48db13d279d592ed3044cbaf3513854bcb0d3dce (diff) | |
download | haskell-2db18b8135335da2da9918b722699df684097be9.tar.gz |
Visible type application
This re-working of the typechecker algorithm is based on
the paper "Visible type application", by Richard Eisenberg,
Stephanie Weirich, and Hamidhasan Ahmed, to be published at
ESOP'16.
This patch introduces -XTypeApplications, which allows users
to say, for example `id @Int`, which has type `Int -> Int`. See
the changes to the user manual for details.
This patch addresses tickets #10619, #5296, #10589.
Diffstat (limited to 'testsuite/tests/typecheck/should_fail/mc21.stderr')
-rw-r--r-- | testsuite/tests/typecheck/should_fail/mc21.stderr | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/testsuite/tests/typecheck/should_fail/mc21.stderr b/testsuite/tests/typecheck/should_fail/mc21.stderr index 3017d2221c..74a13b14bc 100644 --- a/testsuite/tests/typecheck/should_fail/mc21.stderr +++ b/testsuite/tests/typecheck/should_fail/mc21.stderr @@ -1,11 +1,13 @@ -
-mc21.hs:12:26: error:
- Couldn't match type ‘a’ with ‘[a]’
- ‘a’ is a rigid type variable bound by
- a type expected by the context:
- forall a. [a] -> [[a]]
- at mc21.hs:11:9
- Expected type: [a] -> [[a]]
- Actual type: [[a]] -> [[a]]
- In the expression: take 5
- In a stmt of a monad comprehension: then group using take 5
+ +mc21.hs:12:26: error: + • Couldn't match type ‘a’ with ‘[a]’ + ‘a’ is a rigid type variable bound by + a type expected by the context: + forall a. [a] -> [[a]] + at mc21.hs:11:9 + Expected type: [a] -> [[a]] + Actual type: [[a]] -> [[a]] + • In the expression: take 5 + In a stmt of a monad comprehension: then group using take 5 + In the expression: + [GHC.List.length x | x <- [Gnorf, Brain], then group using take 5] |