updates

Author: Sean-Bradley

abstract_factory/README.md

@@ -2,11 +2,11 @@
 
 ## Videos
 
-Section | Video Link
+Section | Video Links
 -|-
-Overview | <a id="ytVideoLink" href="https://youtu.be/eXNLpSQjCzU" target="_blank" title="Overview"><img src="/img/yt_btn_sm.gif" alt="Overview"/></a> 
-Example Use Case | <a id="ytVideoLink" href="https://youtu.be/H18COAHTdVs" target="_blank" title="Use Case"><img src="/img/yt_btn_sm.gif" alt="Use Case"/></a> 
-Exception Handling | <a id="ytVideoLink" href="https://youtu.be/jOxJSA3sxcQ" target="_blank" title="ABCMeta"><img src="/img/yt_btn_sm.gif" alt="Exception Handling"/></a> 
+Abstract Factory Overview | <a id="udemyVideoLink" href="https://www.udemy.com/course/design-patterns-in-python/learn/lecture/16396782/?referralCode=7493DBBBF97FF2B0D24D" target="_blank" title="Abstract Factory Overview"><img src="/img/udemy_btn_sm.gif" alt="Abstract Factory Overview"/></a>&nbsp;<a id="ytVideoLink" href="https://youtu.be/eXNLpSQjCzU" target="_blank" title="Abstract Factory Overview"><img src="/img/yt_btn_sm.gif" alt="Abstract Factory Overview"/></a>&nbsp;<a id="skillShareVideoLink" href="https://skl.sh/34SM2Xg" target="_blank" title="Abstract Factory Overview"><img src="/img/skillshare_btn_sm.gif" alt="Abstract Factory Overview"/></a>
+Abstract Factory Use Case | <a id="udemyVideoLink" href="https://www.udemy.com/course/design-patterns-in-python/learn/lecture/25362118/?referralCode=7493DBBBF97FF2B0D24D" target="_blank" title="Abstract Factory Use Case"><img src="/img/udemy_btn_sm.gif" alt="Abstract Factory Use Case"/></a>&nbsp;<a id="ytVideoLink" href="https://youtu.be/H18COAHTdVs" target="_blank" title="Abstract Factory Use Case"><img src="/img/yt_btn_sm.gif" alt="Abstract Factory Use Case"/></a>&nbsp;<a id="skillShareVideoLink" href="https://skl.sh/34SM2Xg" target="_blank" title="Abstract Factory Use Case"><img src="/img/skillshare_btn_sm.gif" alt="Abstract Factory Use Case"/></a>
+Exception Handling | <a id="udemyVideoLink" href="https://www.udemy.com/course/design-patterns-in-python/learn/lecture/25362160/?referralCode=7493DBBBF97FF2B0D24D" target="_blank" title="Exception Handling"><img src="/img/udemy_btn_sm.gif" alt="Exception Handling"/></a>&nbsp;<a id="ytVideoLink" href="https://youtu.be/jOxJSA3sxcQ" target="_blank" title="Exception Handling"><img src="/img/yt_btn_sm.gif" alt="Exception Handling"/></a>&nbsp;<a id="skillShareVideoLink" href="https://skl.sh/34SM2Xg" target="_blank" title="Exception Handling"><img src="/img/skillshare_btn_sm.gif" alt="Exception Handling"/></a>
 
 ## Book 
 
@@ -127,12 +127,3 @@ You can add exception handling for as many types of errors as you wish.
 
 Python Errors and Exceptions : [https://docs.python.org/3/tutorial/errors.html](https://docs.python.org/3/tutorial/errors.html)
 
-## Summary
-
-* Use when you want to provide a library of relatively similar products from multiple different factories.
-* You want the system to be independent of how the products are created.
-* It fulfills all of the same use cases as the Factory method, but is a factory for creational pattern type methods.
-* The client implements the abstract factory interface, rather than all the internal logic and Factories. This allows the possibility of creating a library that can be imported for using the Abstract Factory.
-* The Abstract Factory defers the creation of the final products/objects to its concrete factory subclasses. 
-* You want to enforce consistent interfaces across products.
-* You want the possibility to exchange product families.

builder/README.md

@@ -2,11 +2,11 @@
 
 ## Videos
 
-Section | Video Link
+Section | Video Links
 -|-
-Overview | <a id="ytVideoLink" href="https://youtu.be/pMadA6F4zGU" target="_blank" title="Overview"><img src="/img/yt_btn_sm.gif" alt="Overview"/></a> 
-Example Use Case | <a id="ytVideoLink" href="https://youtu.be/xvwOwCNxIXM" target="_blank" title="Use Case"><img src="/img/yt_btn_sm.gif" alt="Use Case"/></a> 
-Lists | <a id="ytVideoLink" href="https://youtu.be/54jpHGmHlHQ" target="_blank" title="Lists"><img src="/img/yt_btn_sm.gif" alt="Lists"/></a> 
+Builder Overview | <a id="udemyVideoLink" href="https://www.udemy.com/course/design-patterns-in-python/learn/lecture/16396852/?referralCode=7493DBBBF97FF2B0D24D" target="_blank" title="Builder Overview"><img src="/img/udemy_btn_sm.gif" alt="Builder Overview"/></a>&nbsp;<a id="ytVideoLink" href="https://youtu.be/pMadA6F4zGU" target="_blank" title="Builder Overview"><img src="/img/yt_btn_sm.gif" alt="Builder Overview"/></a>&nbsp;<a id="skillShareVideoLink" href="https://skl.sh/34SM2Xg" target="_blank" title="Builder Overview"><img src="/img/skillshare_btn_sm.gif" alt="Builder Overview"/></a>
+Builder Use Case | <a id="udemyVideoLink" href="https://www.udemy.com/course/design-patterns-in-python/learn/lecture/25362124/?referralCode=7493DBBBF97FF2B0D24D" target="_blank" title="Builder Use Case"><img src="/img/udemy_btn_sm.gif" alt="Builder Use Case"/></a>&nbsp;<a id="ytVideoLink" href="https://youtu.be/xvwOwCNxIXM" target="_blank" title="Builder Use Case"><img src="/img/yt_btn_sm.gif" alt="Builder Use Case"/></a>&nbsp;<a id="skillShareVideoLink" href="https://skl.sh/34SM2Xg" target="_blank" title="Builder Use Case"><img src="/img/skillshare_btn_sm.gif" alt="Builder Use Case"/></a>
+Python **List** | <a id="udemyVideoLink" href="https://www.udemy.com/course/design-patterns-in-python/learn/lecture/25362168/?referralCode=7493DBBBF97FF2B0D24D" target="_blank" title="Python List"><img src="/img/udemy_btn_sm.gif" alt="Python List"/></a>&nbsp;<a id="ytVideoLink" href="https://youtu.be/54jpHGmHlHQ" target="_blank" title="Python List"><img src="/img/yt_btn_sm.gif" alt="Python List"/></a>&nbsp;<a id="skillShareVideoLink" href="https://skl.sh/34SM2Xg" target="_blank" title="Python List"><img src="/img/skillshare_btn_sm.gif" alt="Python List"/></a>
 
 ## Book 
 
@@ -128,10 +128,3 @@ if furniture in ['SmallChair', 'MediumChair', 'BigChair']:
 ```
 
 This line, creates a list at runtime including the strings 'SmallChair', 'MediumChair' and 'BigChair'. If the value in `furniture` equals the same string as one of those items in the list, then the condition is true and the code within the if statement block will execute.
-
-## Summary
-
-* The Builder pattern is a creational pattern that is used to create more complex objects than you'd expect from a factory.
-* The Builder pattern should be able to construct complex objects in any order and include/exclude whichever available components it likes.
-* For different combinations of products than can be returned from a Builder, use a specific Director to create the bespoke combination.
-* You can use an [Abstract Factory](/abstract_factory) to add an abstraction between the client and Director.

prototype/README.md

@@ -2,11 +2,11 @@
 
 ## Videos
 
-Section | Video Link
+Section | Video Links
 -|-
-Overview | <a id="ytVideoLink" href="https://youtu.be/2tFv9Rf2XGg" target="_blank" title="Overview"><img src="/img/yt_btn_sm.gif" alt="Overview"/></a> 
-Example Use Case | <a id="ytVideoLink" href="https://youtu.be/kiMgCLXckU0" target="_blank" title="Use Case"><img src="/img/yt_btn_sm.gif" alt="Use Case"/></a> 
-id() function | <a id="ytVideoLink" href="https://youtu.be/tgbGqu3OQD8" target="_blank" title="python id function"><img src="/img/yt_btn_sm.gif" alt="python id function"/></a> 
+Prototype Overview | <a id="udemyVideoLink" href="https://www.udemy.com/course/design-patterns-in-python/learn/lecture/16396926/?referralCode=7493DBBBF97FF2B0D24D" target="_blank" title="Prototype Overview"><img src="/img/udemy_btn_sm.gif" alt="Prototype Overview"/></a>&nbsp;<a id="ytVideoLink" href="https://youtu.be/2tFv9Rf2XGg" target="_blank" title="Prototype Overview"><img src="/img/yt_btn_sm.gif" alt="Prototype Overview"/></a>&nbsp;<a id="skillShareVideoLink" href="https://skl.sh/34SM2Xg" target="_blank" title="Prototype Overview"><img src="/img/skillshare_btn_sm.gif" alt="Prototype Overview"/></a>
+Prototype Use Case | <a id="udemyVideoLink" href="https://www.udemy.com/course/design-patterns-in-python/learn/lecture/25362134/?referralCode=7493DBBBF97FF2B0D24D" target="_blank" title="Prototype Use Case"><img src="/img/udemy_btn_sm.gif" alt="Prototype Use Case"/></a>&nbsp;<a id="ytVideoLink" href="https://youtu.be/kiMgCLXckU0" target="_blank" title="Prototype Use Case"><img src="/img/yt_btn_sm.gif" alt="Prototype Use Case"/></a>&nbsp;<a id="skillShareVideoLink" href="https://skl.sh/34SM2Xg" target="_blank" title="Prototype Use Case"><img src="/img/skillshare_btn_sm.gif" alt="Prototype Use Case"/></a>
+Python **id()** function | <a id="udemyVideoLink" href="https://www.udemy.com/course/design-patterns-in-python/learn/lecture/25362172/?referralCode=7493DBBBF97FF2B0D24D" target="_blank" title="python id function"><img src="/img/udemy_btn_sm.gif" alt="python id function"/></a>&nbsp;<a id="ytVideoLink" href="https://youtu.be/tgbGqu3OQD8" target="_blank" title="python id function"><img src="/img/yt_btn_sm.gif" alt="python id function"/></a>&nbsp;<a id="skillShareVideoLink" href="https://skl.sh/34SM2Xg" target="_blank" title="python id function"><img src="/img/skillshare_btn_sm.gif" alt="python id function"/></a>
 
 ## Book 
 

singleton/README.md

@@ -2,11 +2,11 @@
 
 ## Videos
 
-Section | Video Link
+Section | Video Links
 -|-
-Overview | <a id="ytVideoLink" href="https://youtu.be/wc1b70LueGA" target="_blank" title="Overview"><img src="/img/yt_btn_sm.gif" alt="Overview"/></a> 
-Example Use Case | <a id="ytVideoLink" href="https://youtu.be/-F7OYXMpVJw" target="_blank" title="Use Case"><img src="/img/yt_btn_sm.gif" alt="Use Case"/></a> 
-Dictionary | <a id="ytVideoLink" href="https://youtu.be/L7IPuo6VOjo" target="_blank" title="Dictionary"><img src="/img/yt_btn_sm.gif" alt="Dictionary"/></a> 
+Singleton Overview | <a id="udemyVideoLink" href="https://www.udemy.com/course/design-patterns-in-python/learn/lecture/25362178/?referralCode=7493DBBBF97FF2B0D24D" target="_blank" title="Singleton Overview"><img src="/img/udemy_btn_sm.gif" alt="Singleton Overview"/></a>&nbsp;<a id="ytVideoLink" href="https://youtu.be/wc1b70LueGA" target="_blank" title="Singleton Overview"><img src="/img/yt_btn_sm.gif" alt="Singleton Overview"/></a>&nbsp;<a id="skillShareVideoLink" href="https://skl.sh/34SM2Xg" target="_blank" title="Singleton Overview"><img src="/img/skillshare_btn_sm.gif" alt="Singleton Overview"/></a>
+Singleton Use Case | <a id="udemyVideoLink" href="https://www.udemy.com/course/design-patterns-in-python/learn/lecture/25362182/?referralCode=7493DBBBF97FF2B0D24D" target="_blank" title="Singleton Use Case"><img src="/img/udemy_btn_sm.gif" alt="Singleton Use Case"/></a>&nbsp;<a id="ytVideoLink" href="https://youtu.be/-F7OYXMpVJw" target="_blank" title="Singleton Use Case"><img src="/img/yt_btn_sm.gif" alt="Singleton Use Case"/></a>&nbsp;<a id="skillShareVideoLink" href="https://skl.sh/34SM2Xg" target="_blank" title="Singleton Use Case"><img src="/img/skillshare_btn_sm.gif" alt="Singleton Use Case"/></a>
+Python **Dictionary** | <a id="udemyVideoLink" href="https://www.udemy.com/course/design-patterns-in-python/learn/lecture/25362192/?referralCode=7493DBBBF97FF2B0D24D" target="_blank" title="Python Dictionary"><img src="/img/udemy_btn_sm.gif" alt="Python Dictionary"/></a>&nbsp;<a id="ytVideoLink" href="https://youtu.be/L7IPuo6VOjo" target="_blank" title="Python Dictionary"><img src="/img/yt_btn_sm.gif" alt="Python Dictionary"/></a>&nbsp;<a id="skillShareVideoLink" href="https://skl.sh/34SM2Xg" target="_blank" title="Python Dictionary"><img src="/img/skillshare_btn_sm.gif" alt="Python Dictionary"/></a>
 
 ## Book 
 
@@ -154,11 +154,3 @@ PS> python
 >>> dict(sorted(items.items()))
 {'abc': 123, 'def': 456, 'ghi': 789}
 ```
-
-## Summary
-
-* To be a Singleton, there must only be one copy of the Singleton, no matter how many times, or in which class it was instantiated.
-* You want the attributes or methods to be globally accessible across your application, so that other classes may be able to use the Singleton.
-* You can use Singletons in other classes, as I did with the leaderboard, and they will all use the same Singleton regardless.
-* You want controlled access to a sole instance.
-* For a class to act as a singleton, it should not contain any references to `self`.