e n u s i n g t h e Effects l i b r ar y : module Main import Effects import Effect.StdIO hello : Eff () [STDIO] hello = putStrLn “Hello world!” main : IO () main = run hello As u s u al , t h e e Al l main h as t o d o i s i n v ok e t h e hello f u n c t i on w h i c h s u p p or t s t h e STDIO e ff e c t f or c on s ol e I /O , an d r e t u r n s t h e u n i t v al u e . Al l p r ogr am s u r y ( p age 95) . 3. 3. 1 C on s ol e I /O C on s ol e I /O i s s u p p or t e d w i t h t h e STDIO e ff e c t , w h i c h al l ow s r e ad i n g an d w r i t i n g c h ar ac t e r s an d s t r i n

奥 奮 奵 女 奩 奮 奧 奴 奨 奥 Effects 奬 奩 奢 奲 奡奲 她 夺 module Main import Effects import Effect.StdIO hello : Eff () [STDIO] hello = putStrLn "Hello world!" main : IO () main = run hello 奁女 奵 女 奵 奡奬 夬 奴 奨 奥 奥 main央 奁奬 奬 main 奨 奡女 奴 奯 奤 奯 奩 女 奩 奮 奶 奯奫 奥 奴 奨 奥 hello 奦 奵 奮 奣 奴 奩 奯奮 奷 奨 奩 奣 奨 女 奵 奰 奰 奯奲 奴 女 奴 奨 奥 STDIO 奥 夛 奥 奣 奴 奦 奯奲 奣 奯奮 女 奯奬 奥 奉 夯奏 夬 奡奮 奤 奲 奥 奴 奵 奲 奮 女 奴 奨 奥 奵 奮 奩 奴 奶 奡奬 奵 奥 央 奁奬 奬 奰 奲 奯奧奲 奡奭 女 奵 r y 夨 姩 妡妵 失夳夳天 央 4. 3. 1 C on s ol e I /O 奃 奯奮 女 奯奬 奥 奉 夯奏 奩 女 女 奵 奰 奰 奯奲 奴 奥 奤 奷 奩 奴 奨 奴 奨 奥 STDIO 奥 夛 奥 奣 奴 夬 奷 奨 奩 奣 奨 奡奬 奬 奯奷 女 奲 奥 奡奤 奩 奮 奧 奡奮 奤 奷 奲 奩 奴 奩 奮 奧 奣 奨 奡奲 奡奣 奴 奥 奲 女 奡奮 奤 女 奴 奲 奩 奮 奧女

e n u s i n g t h e Effects l i b r ar y : module Main import Effects import Effect.StdIO hello : Eff () [STDIO] hello = putStrLn "Hello world!" main : IO () main = run hello As u s u al , t h e e Al l main h as t o d o i s i n v ok e t h e hello f u n c t i on w h i c h s u p p or t s t h e STDIO e ff e c t f or c on s ol e I /O , an d r e t u r n s t h e u n i t v al u e . Al l p r ogr am s u u m m a r y ( p age 132) . C on s ol e I /O C on s ol e I /O i s s u p p or t e d w i t h t h e STDIO e ff e c t , w h i c h al l ow s r e ad i n g an d w r i t i n g c h ar ac t e r s an d s t r i n

e n u s i n g t h e Effects l i b r ar y : module Main import Effects import Effect.StdIO hello : Eff () [STDIO] hello = putStrLn "Hello world!" main : IO () main = run hello As u s u al , t h e e Al l main h as t o d o i s i n v ok e t h e hello f u n c t i on w h i c h s u p p or t s t h e STDIO e ff e c t f or c on s ol e I /O , an d r e t u r n s t h e u n i t v al u e . Al l p r ogr am s u u m m a r y ( p age 132) . C on s ol e I /O C on s ol e I /O i s s u p p or t e d w i t h t h e STDIO e ff e c t , w h i c h al l ow s r e ad i n g an d w r i t i n g c h ar ac t e r s an d s t r i n

e n u s i n g t h e Effects l i b r ar y : module Main import Effects import Effect.StdIO hello : Eff () [STDIO] hello = putStrLn “Hello world!” main : IO () main = run hello As u s u al , t h e e Al l main h as t o d o i s i n v ok e t h e hello f u n c t i on w h i c h s u p p or t s t h e STDIO e ff e c t f or c on s ol e I /O , an d r e t u r n s t h e u n i t v al u e . Al l p r ogr am s u u m m a r y ( p age 133) . C on s ol e I /O C on s ol e I /O i s s u p p or t e d w i t h t h e STDIO e ff e c t , w h i c h al l ow s r e ad i n g an d w r i t i n g c h ar ac t e r s an d s t r i n

e n u s i n g t h e Effects l i b r ar y : module Main import Effects import Effect.StdIO hello : Eff () [STDIO] hello = putStrLn "Hello world!" main : IO () main = run hello As u s u al , t h e e Al l main h as t o d o i s i n v ok e t h e hello f u n c t i on w h i c h s u p p or t s t h e STDIO e ff e c t f or c on s ol e I /O , an d r e t u r n s t h e u n i t v al u e . Al l p r ogr am s u u m m a r y ( p age 132) . C on s ol e I /O C on s ol e I /O i s s u p p or t e d w i t h t h e STDIO e ff e c t , w h i c h al l ow s r e ad i n g an d w r i t i n g c h ar ac t e r s an d s t r i n

e n u s i n g t h e Effects l i b r ar y : module Main import Effects import Effect.StdIO hello : Eff () [STDIO] hello = putStrLn "Hello world!" main : IO () main = run hello As u s u al , t h e e Al l main h as t o d o i s i n v ok e t h e hello f u n c t i on w h i c h s u p p or t s t h e STDIO e ff e c t f or c on s ol e I /O , an d r e t u r n s t h e u n i t v al u e . Al l p r ogr am s u r y ( p age 139) . 4. 3. 1 C on s ol e I /O C on s ol e I /O i s s u p p or t e d w i t h t h e STDIO e ff e c t , w h i c h al l ow s r e ad i n g an d w r i t i n g c h ar ac t e r s an d s t r i n

e n u s i n g t h e Effects l i b r ar y : module Main import Effects import Effect.StdIO hello : Eff () [STDIO] hello = putStrLn “Hello world!” main : IO () main = run hello As u s u al , t h e e Al l main h as t o d o i s i n v ok e t h e hello f u n c t i on w h i c h s u p p or t s t h e STDIO e ff e c t f or c on s ol e I /O , an d r e t u r n s t h e u n i t v al u e . Al l p r ogr am s u u m m a r y ( p age 132) . C on s ol e I /O C on s ol e I /O i s s u p p or t e d w i t h t h e STDIO e ff e c t , w h i c h al l ow s r e ad i n g an d w r i t i n g c h ar ac t e r s an d s t r i n

e n u s i n g t h e Effects l i b r ar y : module Main import Effects import Effect.StdIO hello : Eff () [STDIO] hello = putStrLn "Hello world!" main : IO () main = run hello As u s u al , t h e e Al l main h as t o d o i s i n v ok e t h e hello f u n c t i on w h i c h s u p p or t s t h e STDIO e ff e c t f or c on s ol e I /O , an d r e t u r n s t h e u n i t v al u e . Al l p r ogr am s u r y ( p age 138) . 4. 3. 1 C on s ol e I /O C on s ol e I /O i s s u p p or t e d w i t h t h e STDIO e ff e c t , w h i c h al l ow s r e ad i n g an d w r i t i n g c h ar ac t e r s an d s t r i n

e n u s i n g t h e Effects l i b r ar y : module Main import Effects import Effect.StdIO hello : Eff () [STDIO] hello = putStrLn "Hello world!" main : IO () main = run hello As u s u al , t h e e Al l main h as t o d o i s i n v ok e t h e hello f u n c t i on w h i c h s u p p or t s t h e STDIO e ff e c t f or c on s ol e I /O , an d r e t u r n s t h e u n i t v al u e . Al l p r ogr am s u r y ( p age 136) . 4. 3. 1 C on s ol e I /O C on s ol e I /O i s s u p p or t e d w i t h t h e STDIO e ff e c t , w h i c h al l ow s r e ad i n g an d w r i t i n g c h ar ac t e r s an d s t r i n