Introduction
This article is part of the Scala knowledge bits Series.
Periodically, I will publish new exercises so you can slowly build up knowledge about Scala.
It is designed to be done in a very short amount of time and learn a little bit each day, just to create a routine.
This episode will teach you about Scala Method with Arguments.
Hope you are going to enjoy it! It is designed for anyone to learn Scala from scratch and slowly learn, one Bit at a time.
After this Bit, I would love to hear your feedback in the comments down below.
Feel free to join the Discord server as well if you would like some help and support from the rest of our community.
What are we learning today?
Today we are going to learn about Scala Method with Arguments !
In programming language, a method does some operations and return a result.
In most use cases, the method will take parameters to perform the operation.
Time to try on the exercise on your own and scroll down for more information when you are done or if you are stuck.
Exercise
Here is an exercise to complete today.
If I did my job well, you should be able to guess by yourself the solution based on what you previously learned and based on the clues.
But if you get stuck, scroll down to get more information.
The goal of the exercise is to replace the ??? by a piece of code so that the exercise compiles and that’s how you win! Good luck!
You can fill the exercise right in here:
Or, if it does not load, go on to Scastie (P7T6QckdSIKzUFdCdawLEg).
More information about Scala Method with Arguments
In this exercise you will learn (or have learned, if you have already solved the puzzle) about Scala Method with Arguments.
You have learned that a and b are parameters of the method add. You can use them as normal values but only within the method. You can extend the context to several lines with {...}.
In some other programming language, like Java, you need the keyword return to make the method return a value but in Scala, the last line of the method is what is being returned automatically.
Feel free to go back to the exercise, modify the code to try out new things and get a better intuition for Scala Method with Arguments.
Conclusion
I hope you have learned something new or had fun during this Scala Knowledge Bit.
Please ask questions or post feedback in the comments below.
Feel free to try on the next Scala Knowledege Bit.
If you are curious about the previous Scala knowledge Bits, go check it out! 🙂