Honestly, the two patterns are pretty similar in practice, and the defining difference between them tends to vary depending on who you ask. Some popular choices are: States store a reference to the context object that contains them. Strategies do not. States are allowed to replace themselves (IE: to change the state of the context … Read more
There are a few ways of doing this, but the way I prefer is to inject a list of available strategies into your factory, and then filtering them to return the one(s) you’re interested in. Working with your example, I’d modify IShippingStrategy to add a new property: public interface IShippingStrategy { int CalculateShippingCost(Order order); string … Read more
Let’s explain the strategy pattern the easy way: You have a class Car() with a method run(), so you use it this way in a pseudo language: mycar = new Car() mycar.run() Now, you may want to change the run() behavior on the fly, while the program is executing. For example, you might want to … Read more
What about this: You have to encrypt a file. For small files, you can use “in memory” strategy, where the complete file is read and kept in memory ( let’s say for files < 1 gb ) For large files, you can use another strategy, where parts of the file are read in memory and … Read more