99 lines
1.8 KiB
AppleScript
99 lines
1.8 KiB
AppleScript
-- curry :: (Script|Handler) -> Script
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on curry(f)
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script
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on |λ|(a)
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script
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on |λ|(b)
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|λ|(a, b) of mReturn(f)
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end |λ|
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end script
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end |λ|
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end script
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end curry
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-- TESTS ----------------------------------------------------------------------
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-- add :: Num -> Num -> Num
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on add(a, b)
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a + b
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end add
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-- product :: Num -> Num -> Num
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on product(a, b)
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a * b
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end product
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-- Test 1.
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curry(add)
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--> «script»
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-- Test 2.
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curry(add)'s |λ|(2)
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--> «script»
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-- Test 3.
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curry(add)'s |λ|(2)'s |λ|(3)
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--> 5
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-- Test 4.
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map(curry(product)'s |λ|(7), enumFromTo(1, 10))
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--> {7, 14, 21, 28, 35, 42, 49, 56, 63, 70}
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-- Combined:
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{curry(add), ¬
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curry(add)'s |λ|(2), ¬
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curry(add)'s |λ|(2)'s |λ|(3), ¬
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map(curry(product)'s |λ|(7), enumFromTo(1, 10))}
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--> {«script», «script», 5, {7, 14, 21, 28, 35, 42, 49, 56, 63, 70}}
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-- GENERIC FUNCTIONS ----------------------------------------------------------
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-- enumFromTo :: Int -> Int -> [Int]
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on enumFromTo(m, n)
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if n < m then
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set d to -1
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else
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set d to 1
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end if
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set lst to {}
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repeat with i from m to n by d
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set end of lst to i
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end repeat
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return lst
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end enumFromTo
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-- map :: (a -> b) -> [a] -> [b]
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on map(f, xs)
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tell mReturn(f)
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set lng to length of xs
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set lst to {}
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repeat with i from 1 to lng
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set end of lst to |λ|(item i of xs, i, xs)
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end repeat
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return lst
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end tell
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end map
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-- Lift 2nd class handler function into 1st class script wrapper
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-- mReturn :: Handler -> Script
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on mReturn(f)
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if class of f is script then
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f
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else
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script
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property |λ| : f
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end script
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end if
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end mReturn
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