Design Patterns: Command/Memento

This is the first of an eight part series where Robert is joined by Phil Japikse to discuss design patterns. A design pattern is a best practice you can use in your code to solve a common problem. In this episode, Phil demonstrates the Command and Memento patterns.
Episodes in this series:
- Command/Memento patterns
- Strategy pattern
- Template Method pattern
- Observer/Publish-Subscribe patterns
- Singleton pattern
- Factory patterns
- Adapter/Façade patterns
- Decorator pattern
Resources:
- Sample code: github.com/skimedic/presentat...
- Design Patterns: Elements of Reusable Object-Oriented Software book: www.amazon.com/Design-Pattern...
- Head First Design Patterns book: www.amazon.com/Head-First-Des...

[@draqula004]

I love this series...so important. Please keep them coming

[@stevenvolckaert8419]

Great series so far, looking forward to the rest. Keep it up 👍

[@Indyy67]

I wish I had this guy as mi CS professor or as my programming logic instructor. I love the way he teaches the subject matter. I know this stuff already but just don’t articulate it clearly sometimes.

[@Sp1derFingers]

Just a heads up MemberwiseClone will produced a shallow copy of an object. This means that any references(non value types) from one object will also be cloned and point to the same data. Changing a property on a reference will also change on the cloned object. This does not included strings because they are immutable.

[@user-bv6bi2sz8r]

excellent lectures, hope you guys do more patterns like bridge, flyweight and so on..

[@viteok1234]

I think even Robert Greene did not understand it well , because he can't formulate a clear sentence about what he understood : watch - 12:45 - 13:50 . Otherwise - txs for organizing this course with explanation.

[@boradmay]

great help, thanks

[@Ammarbashir15]

What could be application of saving the history of objects to use later in time?

[@seancpp]

Ammar Bashir literally anything that needs to be rebuilt based on state changes. Undo/Redo is not a small or pointless feature

[@filippasek6]

Could someone explain the story with strategy pattern?

[@BharatKumarBellamkonda]

Can I have link to this playist.

[@Hasi29347]

kzbin.info/www/bejne/sIPFeZ96mtShaac&ab_channel=MicrosoftVisualStudio

[@viteok1234]

I am knew to programming and probably below content is not at your level of thinking, but I like to see things explained simply and clear so : I would like to see a more practical example of what a Command pattern is , you are too abstract Japikse. Your are creating 2 commands : addNumbers and addText - but provide string values for both of them for "testing" purposes. You should then provide a modification of your example so it test also with numbers. Why smart guys like you can't explain VERY CLEAR those simple things ?

[@MrPDTaylor]

Call the fixer. Mafia OOP.