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- To avoid confusion for the user of the method, the attribute should not be applied on a method that accepts parameters, since the method will always return the same results even when called with different parameter values.
- This attribute is intended for expensive calculations, it is not recommended for short methods and properties.
- The modified method will be made thread safe through the use of a lock.
Example.
| Code Block |
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"""/* doing expensive processing 1234 1234 """*/ import Useful.Attributes from "Boo.Lang.Useful" class OnceTest: [Once] def expensiveFunction(): # Do expensive processing here print "doing expensive processing" resultOfExpensiveProcessing = 1234 # ... and return results return resultOfExpensiveProcessing onceTest = OnceTest() print onceTest.expensiveFunction() print onceTest.expensiveFunction() |
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