template-method-pattern

After the helpful answers to my last question I started using the template method pattern for a class with a lot of different options. Without having implemented them all, my current declarations for objects of that class now look like this: pc < prg, tc, 9, 0, 4, 4, test, true, true, true, true, false, true, true, 10, 0, -1, 3, 3 > mp; How do you deal with long template parameter lists? Should I use enums/defines instead of true/false and numbers? Are there commonly used alternatives? Yes, use enums (not defines) instead of true/false. That way, if you get the parameters out of order, then

I have some object oriented code in Python, where some classes are meant to be extended to provide the missing custom bits of code (a la Template Method pattern , but also with variables), that will only be used by the super class, not by the client code using them. Are there any style conventions for such abstract (or dull, because their implementation in the super class would be either pass or raise a NonImplemented exception) methods and attributes? I've been browsing the PEP-0008 and it only mentions about prepending an underscore to private members not intended to be used by subclasses.

I'm in a class where we just learned about these design patterns. However I couldn't see any difference between them. They sound just like the same, creating concrete classes over the abstract one. Could somebody help me kill this doubt? thanks (: Both the visitor, the strategy, and the template pattern encompass the application of an algorithm. The biggest difference is in how they are evoked and how they are used in practice. While it may seem like they have the same use case, look at the construction of the objects to see the difference. The strategy pattern is often used when we don't have

From what I understand, Template method is nothing but ordinary method that calls virtual or abstract methods defined in child class. Am I right, or is there something else important about this pattern that I miss? abstract class Foo { public void IamTemplateMethod() { // which will be called in child class object method1(); // because this... method2(); // ...or this method was called in me } public virtual void method1() { ... } // to be overriden in child class public abstract void method2() { ... } // to be defined in child class } If I am right, are there any other common ways to

Can someone please explain to me what is the difference between the template method pattern and the strategy pattern is? As far as I can tell they are 99% the same - the only difference being that the template method pattern has an abstract class as the base class whereas the strategy class uses an interface that is implemented by each concrete strategy class. However, as far as the client is concerned they are consumed in exactly the same way - is this correct? thehouse The main difference between the two is when the concrete algorithm is chosen. With the Template method pattern this happens

Can anyone let me know some example situations where Template Method - pattern should be used? Give me some real-world use from your own experience. (I have so far found it useful only for mapping data in the DA layer. Sorry!!!) MMKarami I tried to give you some real-world examples, and some common situations where Template Method pattern should be used. When you want your program be "Open For Extension” and also “Closed for Modification”. This means that the behavior of the module can be extended, such that we can make the module behave in new and different ways as the requirements of the