Now the idea behind weighted search is nice, but it is complicated, requires several extra calculation steps, and can cause other issues. In a Database, you might have heard about indexing. The idea of finding a way to store a subset of your table which means faster searching. Of course, if you are looking through…
On one end, some languages are “type-less” languages, meaning that they don’t have data types. Examples include COBOL, Python, JavaScript, and more, however, they usually do have them, they just hide the type from us which can dynamically change as the program runs depending upon how the data is being used. One the other end…
Complex data types are usually classes. Some might be supplied by the language, while others are user defined. Complex data types have methods built in for working with the data, libraries that come with the language (potentially) and will vary from language to language on how they are stored and handled. The types of data…
Let’s look at some samples of using recursion. Sometimes we use t because it is easier to write and maintain. Sometimes it is because it’s about the only way we can. The use of recursion is all around us. One major example is in fractals. A fractal is a never-ending pattern. Fractals are infinitely complex…
We’ve seen examples of where one function calls another. For example inside of main, you see that load_data(), total(), and average() are called. Recursion is where a function, calls itself. As you can see, calling yourself is “easy” but also “dangerous”. You can easily end up in an infinite recursive loop, that is until you…
We’ve looked at working with a single object. But what about real life situations, where you need multiple objects? For example, as Python Object of a single student is nice, but you need to have a group of them to be really useful. This also works for other objects, like cars on a dealership lot,…
While our class works well, there are a few additional things we can do to make it better. Add Security One down side to our class is while we have class variables, anyone who knows our variable names can access them by specifying our object instance name and then the variable name, like in the…
Class vs Object One of the big questions about OOP is what is a class, vs what is an object. A class, sometimes called class definition, tells us what the object will look like. What internal variables they are using, and what methods will be used to access and control those values. However, it is…
