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Author:halw

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Date:2011-07-18T18:32:24.000000Z


git-svn-id: https://svn.eiffel.com/eiffel-org/trunk@945 abb3cda0-5349-4a8f-a601-0c33ac3a8c38
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halw
2011-07-21 16:35:54 +00:00
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documentation/current/method/void-safe-programming-eiffel/creating-new-void-safe-project.wiki
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@@ -95,7 +95,7 @@ Upon creation, each element of the array will reference the same object; an obje
==Using the ''attribute'' keyword carefully==
The keyword <code>attribute</code> should be used with some care. You might be tempted to think that it would be convenient or add an extra element of safety to use self-initializing attributes widely. And in a way, you would be correct. But you should also understand that there is a price to pay for using self-initializing attributes and stable attributes. It is that upon every access, an evaluation of the state of the attribute must be made. So, as a general rule, you should avoid using self-initializing attributes only for the purpose of lazy initialization.
The keyword <code>attribute</code> should be used with some care. You might be tempted to think that it would be convenient or add an extra element of safety to use [[Void-safety: Background, definition, and tools#Self-initializing attributes|self-initializing attributes]] widely. And in a way, you would be correct. But you should also understand that there is a price to pay for using self-initializing attributes and stable attributes. It is that upon every access, an evaluation of the state of the attribute must be made. So, as a general rule, you should avoid using self-initializing attributes only for the purpose of lazy initialization.
==More about the ''attached syntax''==