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