Add the haskell book

2025-12-09 16:32:32 +01:00
parent c95abc31d6
commit 3624c712d7
67 changed files with 1576 additions and 0 deletions
--- a/Haskell-book/11/Programmer.hs
+++ b/Haskell-book/11/Programmer.hs
@@ -0,0 +1,40 @@
+module Programmer where
+
+data OperatingSystem = GnuPlusLinux
+                     | OpenBSDPlusNevermindJustBSDStill
+                     | Mac
+                     | Windows
+                     deriving (Eq, Show)
+
+data ProgLang = Haskell
+              | Agda
+              | Idris
+              | PureScript
+              deriving (Eq, Show)
+
+data Programmer = Programmer { os :: OperatingSystem
+                             , lang :: ProgLang }
+                  deriving (Eq, Show)
+
+allOperatingSystems :: [OperatingSystem]
+allOperatingSystems =
+    [ GnuPlusLinux
+    , OpenBSDPlusNevermindJustBSDStill
+    , Mac
+    , Windows
+    ]
+
+allLanguages :: [ProgLang]
+allLanguages =
+    [ Haskell
+    , Agda
+    , Idris
+    , PureScript
+    ]
+
+allProgrammers :: [Programmer]
+allProgrammers = do
+    o <- allOperatingSystems
+    l <- allLanguages
+    return Programmer { os = o
+                      , lang = l }