I have a standard polymorphic relationship and I need to know who its parent is before I save it. Class Pict开发者_运维技巧ure < AR::Base
I\'m know polymorphism rule that we can send it via parameter like this code interface Animal { void whoAmI();
Suppose I have an abstract base cl开发者_如何学Goass, that just defines a container on which addition can be performed:
\"Replace conditional with polymorphism\" is elegant only when type of object you\'re doing switch/if statement for is already selected for you.As an example, I have a web application which reads a qu
This is a question of curiosity about accepted coding practices. I\'m (primarily) a Java developer, and have been increasingly making efforts to unit test my code. I\'ve spent some time looking at how
I\'m trying to implement a polymorphic iterator in C++. Basically, I need this to be able to apply a filter, so that the iterator would skip some items depending on the associated condition. So I made
I have a hierarchy of JAXB-generated classes. I would like to marshal a child class as a base class element (but with all the child class attributes), using xsi:type to indicate the concrete type.
Consider the following scenario. Document -> Section -> Body -> Items Document has sections, a section contains a body. A body has some text and a list of items. The items is what the question is ab
I\'m running 开发者_Python百科into issues with being able to call functions/properties that are unique to the child class. I\'m wondering if there is a way to do do something similar to the following:
I was trying to do something like class O has a child E I declare the variable O xyz = new E(); but then if I call xyz.method(), I can only call those in class O\'s methods, not E\'s, so I can
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