I have a table Category that is a polymorphic model for a bunch of other models. For instance model Address has shipping, billing,
I have two types of \'owner\', each of which can have one \'preference\'. This is my current set up (i.e. how I imagine a one-to-one polymorphic would work):
I\'ve an existing method which looks like this: public void parseMessage(String message){ ... ... ... } and the method is called by calling it as shown below
I\'m trying to model the following situation into an XSD schema, but kinda stuck and not sure if XSD supports what I\'m trying to achieve.
Does casting a pointer to an instance of a d开发者_运维百科ervived class to the instances base class have any run-time overhead in C++, or is it resolved at compile-time?
I created a function to automatically assign values from a select in whatever matching variables available in the related class
Here\'s the parent class: class Event { public function getLang($lang){ $sql = \"select * from Event where EventID =\" . $this->EventID . \"AND Lang =\" . $lang;
If I have a class hierarchy in which subclasses require use of more specific types than those specified in the superclasses\' ivars, is it better to declare the superclass ivar as id, or to type it an
Fairly new to Rails 3 and have been Googling every which way to no avail to solve the following problem, with most tutorials stopping short of handling errors.
Assuming i have this classic switch, i know that when we arebuilding classes is not a good practice use the switch method, so, how i can rebuild this into a class without using switch but Polymorphism
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