We can agree that a function with zero arguments is a good function, we don’t have to worry too much about it. The perfect world will be if all functions have zero arguments, but we know that’s not possible. Sometimes…
The code that we write is more read than written. We write the code once, and it’s read many times more. Because of this, we need to write code that the reader could understand. We should care about the unit…
You can check all the code in this git repository. Have you ever had a switch like this: switch (operation) { case “+”: Add(number, number2); break; case “-“: Subtraction(number, number2); break; case “*”: Multiply(number, number2); break; case “/”: Divide(number, number2);…
In the first chapter of the clean code, Uncle Bob talks about the boy scout rule, which can be summarized as: Leave the code cleaner than you found it. Meaning that every time that we make a change in our code base, make an improvement in…
In this post I’m going to talk about how we can write more maintainable unit tests. Maintainability is of the main issues that we face when writing unit tests. The number of unit tests can grow a lot, and become…
A unit test verifies if the system under test is working the way it should, but how can we trust the test? Anyone which codes, can also write unit tests. It’s hard in the beginning, but if we keep making…
Functional programming uses the option type widely, in languages such as Haskell, F#, Scala and a lot more. In this language it’s a convention to return a value when the function fails. The following example is a function written in…
In programming null is an awkward thing to deal with, when you return a variable with null value, you have to remember to make null checks all around your code. The null object and the special case object are patterns that…
Naming classes, methods, variables are hard, perhaps one of the most difficult things in programming. There are only two hard things in Computer Science: cache invalidation and naming things. — Phil Karlton I’m recently reading the book The Art Of Unit Testing, by Roy…
