52 lines
1.0 KiB
AppleScript
52 lines
1.0 KiB
AppleScript
on run
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script
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-- The given function applied to the value 3
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on |λ|(f)
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mReturn(f)'s |λ|(3)
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end |λ|
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end script
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-- Here, 'result' is bound to the script above
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map(result, {square, squareRoot})
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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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-- 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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