polymorphism

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ThinkingSphinx Polymorphic relation problem | rails 3.1

I could not create index with thinking_sphinx for the simple polymorphic schema below. (Note: I am able to create index from has_many models but I want to create my indexes from \'belongs_to\' model ([详细]

2023-04-06 18:11 分类：问答
Jackson deserialization Unexpected token (END_OBJECT),

I am trying to deserialize a JSON Object into a Java Object using Jackson annotation on one Abstact class \"Animal\":[详细]

2023-04-06 16:59 分类：问答
parent class to return subclass

Its hard to explain in word what I\'m after but hopefully the code example below with the comments is sufficient. Basically I want the SubClass sc = new Subclass().method1() line to return the Subclas[详细]

2023-04-06 11:40 分类：问答
Inheritance in C++

EDIT 2: Here is a simple summary of what I want to do (I think): I want to dynamically create global instances based on conditions that are calculated at run time.[详细]

2023-04-06 09:06 分类：问答
Filling a list with classes which text point to a class

How can I reduce this _tile assignment, so I could make a single assignment? x is a anonymous list. x => List {String name, int x, int y}[详细]

2023-04-06 06:29 分类：问答
jaxb - how to create XML from polymorphic classes

I\'ve just started using JAXB to make XML output from java objects. A polymorphism exists in my java classes, which seems to not working in JAXB.[详细]

2023-04-06 04:50 分类：问答
Show function for polymorphic type

I\'m trying to define the Show function for the polymorphic Tree type. Could anyone help me? import Char[详细]

2023-04-05 20:02 分类：问答
Adding custom behavior to Clojure's sequences

Part of what\'s so powerful about Clojure is that all the core data-types implement the same sequence abstraction: clojure.lang.ISeq.[详细]

2023-04-05 19:12 分类：问答
Type casting question

foreach(PlayerBase p in Members) { p.Render(); } The Members list contains members of type FieldPlayer or GoalKeeper. FieldPlayer an开发者_Python百科d GoalKeeper inherit from PlayerBase. When I call[详细]

2023-04-05 09:49 分类：问答
Double dispatching fails for an InputMap in C++ - codes reduced to simplicity

Hello in one of my current projects I want to implement an InputMap. So I have an abstract input //Input.h[详细]

2023-04-05 08:01 分类：问答