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ado002.hs:8:8: error:
• Couldn't match expected type: Char -> IO b0
with actual type: IO Char
• The function ‘getChar’ is applied to one value argument,
but its type ‘IO Char’ has none
In a stmt of a 'do' block: y <- getChar 'a'
In the expression:
do x <- getChar
y <- getChar 'a'
print (x, y)
ado002.hs:9:3: error:
• Couldn't match type ‘()’ with ‘Int’
Expected: IO Int
Actual: IO ()
• In a stmt of a 'do' block: print (x, y)
In the expression:
do x <- getChar
y <- getChar 'a'
print (x, y)
In an equation for ‘f’:
f = do x <- getChar
y <- getChar 'a'
print (x, y)
ado002.hs:15:11: error:
• Couldn't match expected type ‘Int’ with actual type ‘Char’
• In the expression: y
In a stmt of a 'do' block: return (y, x)
In the expression:
do x <- getChar
y <- getChar
return (y, x)
ado002.hs:15:13: error:
• Couldn't match expected type ‘Int’ with actual type ‘Char’
• In the expression: x
In a stmt of a 'do' block: return (y, x)
In the expression:
do x <- getChar
y <- getChar
return (y, x)
ado002.hs:23:9: error:
• Couldn't match expected type: Char -> IO a0
with actual type: IO Char
• The function ‘getChar’ is applied to one value argument,
but its type ‘IO Char’ has none
In a stmt of a 'do' block: x5 <- getChar x4
In the expression:
do x1 <- getChar
x2 <- getChar
x3 <- const (return ()) x1
x4 <- getChar
x5 <- getChar x4
return (x2, x4)
ado002.hs:24:11: error:
• Couldn't match expected type ‘Int’ with actual type ‘Char’
• In the expression: x2
In a stmt of a 'do' block: return (x2, x4)
In the expression:
do x1 <- getChar
x2 <- getChar
x3 <- const (return ()) x1
x4 <- getChar
x5 <- getChar x4
return (x2, x4)
ado002.hs:24:14: error:
• Couldn't match expected type ‘Int’ with actual type ‘Char’
• In the expression: x4
In a stmt of a 'do' block: return (x2, x4)
In the expression:
do x1 <- getChar
x2 <- getChar
x3 <- const (return ()) x1
x4 <- getChar
x5 <- getChar x4
return (x2, x4)
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