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| From | Dieter Maurer <dieter@handshake.de> |
| Subject | Re: Are the property Function really useful? |
| Date | Thu, 30 Aug 2012 09:36:46 +0200 |
| References | <6ab76fcc34adc04a8b113b77c1e85606@pc-20120706ouob> |
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<levinie001@gmail.com> writes: > Are the property Function really useful? Someone invested time to implement/document/test it. Thus, there are people who have use cases for it... > Where can i use the property function? You can use it when you have parameterless methods which you want to access as if they were simple attributes: i.e. "obj.m" instead of "obj.m()". To phrase is slightly differently: the "property" function allows you to implement "computed" (rather than "stored") attributes. You may find this feature uninteresting: fine, do not use it... However, there are cases where it is helpful, e.g.: You have a base class "B" with an attribute "a". Now, you want to derive a class "D" from "B" where "a" is not fixed but must be computed from other attributes. The "Eiffel" programming language even stipulates that attributes and parameterless methods are essentially the same and application of the "property" function is implicit in "Eiffel" for parameterless methods: to hide implementation details. As you see, "property" can be highly valued ;-)
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Re: Are the property Function really useful? Dieter Maurer <dieter@handshake.de> - 2012-08-30 09:36 +0200
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