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maybe
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| maybe = (fn) -> -> | |
| return if arguments.length is 0 | |
| for arg in arguments | |
| return if !arg? | |
| fn.apply(@, arguments) | |
| # Usage | |
| Z = maybe((n)->n*n) | |
| Z() # undefined | |
| Z(16) # 256 |
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| # Shorter one | |
| maybe2 = (fn) -> -> | |
| return if arguments.length is 0 | |
| for arg in arguments | |
| return if !arg? | |
| fn ... |
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