49 lines
1,023 B
AppleScript
49 lines
1,023 B
AppleScript
on run
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1 + 2
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ap({square, squareRoot}, {result})
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--> {9, 1.732050807569}
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end run
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-- square :: Num a => a -> a
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on square(x)
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x * x
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end square
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-- squareRoot :: Num a, Float b => a -> b
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on squareRoot(x)
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x ^ 0.5
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end squareRoot
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-- GENERIC FUNCTIONS ----------------------------------------------------------
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-- A list of functions applied to a list of arguments
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-- (<*> | ap) :: [(a -> b)] -> [a] -> [b]
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on ap(fs, xs)
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set intFs to length of fs
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set intXs to length of xs
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set lst to {}
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repeat with i from 1 to intFs
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tell mReturn(item i of fs)
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repeat with j from 1 to intXs
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set end of lst to |λ|(contents of (item j of xs))
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end repeat
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end tell
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end repeat
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return lst
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end ap
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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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