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Diffstat (limited to 'Haskell-book/22/Ash.hs')
| -rw-r--r-- | Haskell-book/22/Ash.hs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Haskell-book/22/Ash.hs b/Haskell-book/22/Ash.hs new file mode 100644 index 0000000..d3bf585 --- /dev/null +++ b/Haskell-book/22/Ash.hs @@ -0,0 +1,7 @@ +module Ask where + +newtype Reader r a = + Reader { runReader :: r -> a } + +ask :: Reader a a +ask = Reader id |