Inheritance, Polymorphism, Encapsulation - Data Structures and Algorithms

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[@marcoflores1764]

That chalk drop though. Hahaha Caleb you’re hilarious. Thanks for the tutorial

[@sancrosanct5070]

Yes!!!!You made a video on something I can relate to java! Thanks a lot

[@TravisGarnett]

Thank-you, Caleb!! And nice work on the #CurryCut!! 💈

[@cheesegood733]

Caleb, i wish you had more views, you're a really good teacher

[@zarazada]

Thank you, Caleb

[@StorminNormin411]

very helpful, thanks dude.

[@justinmcnab9895]

We will send you the chalk. You just keep sending these amazing videos!

[@chrishsmith5419]

Nice work buddy

[@sajaldwivedi1207]

Hey Caleb, Are you going to cover every data structure (Linear and non-linear) in this series? Will you be using python or c++ for implementing them?

[@Julio860JVL]

I am learning little by little. I need to finish the PHP tutorial. I have about 5 more to go. Caleb, if you ever create a Udemy tutorial, I will buy it. Edit: I know of a niche on missing tutorials in Udemy that can sell very good. If you are interested, send me a messsge.

[@abdishakur2489]

Cool video

[@markcain2116]

Why don't you include 'Abstraction' in your OOP definition? Thanks.

[@machinimaaquinix3178]

Level up! Get some chalk holders :D

[@TonyTigerTonyTiger]

13:20 You are suggesting having a public variable (field) in a class. That's considered bad design.

[@codebreakthrough]

Why? I can start with a public variable, avoid polluting my code with pointless getters and setters, and later implement it as a property without changing the interface/api to work with the objects. If there needs to be processing or encapsulation from the get-go, then sure...use a property. Adding processing later would require changes to the code anyway so no reason to use a property to future proof the code (the calling code stays the same regardless of public variable or a property). Properties tend to be used all the time in C#. And avoided unless necessary in Python... I really don’t think it’s proper to claim all public fields as bad design and it would be better to understand pros and cons. Appreciate your thoughts!!

[@TonyTigerTonyTiger]

@@codebreakthrough 1) Debugging a. You have a public field and throughout the code base its value can be read or modified in 20 places. There is a bug. To debug code you have to put breakpoints in 20 places. b. You used a property. All modifications to the value are centralized and channeled through 1 place, so you need only 1 breakpoint. 2) Theory "For data hiding to work properly, all attributes should be declared as private. Thus, attributes are never part of the interface. Only the public methods are part of the class interface. Declaring an attribute as public breaks the concept of data hiding." (The Object-Oriented Thought Process: Fifth Edition. Matt Weisfeld. Pearson/Addson-Wesley. 2019. p20)

[@TonyTigerTonyTiger]

1:50 You draw the arrow in the wrong direction. The arrow should point from the derived class to the base class. You do it wrong again later, when you have another derived class.

[@codebreakthrough]

It’s just an arrow, I wouldn’t read too much in to it. I don’t believe there’s an official direction lol. According to Wikipedia I am correct: en.m.wikipedia.org/wiki/Inheritance_(object-oriented_programming)