https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/09/Liskov-Guide-Faces.png?fit=1600%2C1000&ssl=1
1000
1600
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-09-13 13:29:042023-09-16 10:43:35The Sad and Happy Faces of Liskov
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/09/galina-nelyubova-yNb_3fGUaxY-unsplash.jpg?fit=640%2C384&ssl=1
384
640
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-09-06 12:16:002023-09-06 12:17:14The Difference between Validation and Business Rules
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/07/allison-saeng-_LoleWcsX4I-unsplash.jpg?fit=640%2C480&ssl=1
480
640
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-07-26 08:25:142023-07-26 08:25:14The Grand Chessboard of Software Design: Unlocking the Strategy Pattern
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/07/dayne-topkin-u5Zt-HoocrM-unsplash.jpg?fit=640%2C427&ssl=1
427
640
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-07-05 08:45:222023-07-05 08:45:22Should We Directly Unit-Test Private Functions?
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/06/ReadOnly_Getters.jpg?fit=2312%2C1736&ssl=1
1736
2312
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-06-21 10:46:262023-06-21 10:46:26The Joy of Read-Only Getters
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/06/austin-chan-ukzHlkoz1IE-unsplash.jpg?fit=640%2C427&ssl=1
427
640
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-06-14 10:50:272023-06-14 12:13:45Unit Testing Non-Deterministic Values
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/06/shubham-dhage-pb5w9WU1goA-unsplash.jpg?fit=640%2C480&ssl=1
480
640
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-06-07 10:20:052023-06-07 10:20:05Fixing Misconfigurations With Smart Defaults
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/05/config.jpg?fit=2312%2C1736&ssl=1
1736
2312
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-05-31 10:30:092023-05-31 10:30:09Beyond String Configurations
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/05/ravi-palwe-I3urDa6z2_4-unsplash.jpg?fit=640%2C427&ssl=1
427
640
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-05-24 10:45:532023-05-24 10:45:53Separate Configuration. Here’s Why.
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/05/bouncer-1.jpg?fit=542%2C372&ssl=1
372
542
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-05-17 08:17:562023-05-17 08:17:56What Is Authorisation?
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/05/ed-hardie-RMIsZlv8qv4-unsplash.jpg?fit=640%2C427&ssl=1
427
640
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-05-10 10:00:272023-05-10 10:23:19What Is Authentication?
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/05/mostafa-meraji-n64TcuScGlc-unsplash.jpg?fit=640%2C427&ssl=1
427
640
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-05-03 07:57:032023-05-03 07:59:09Using Exceptions For Program Control Flow?
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/04/randy-laybourne-duTm7WvwN0U-unsplash.jpg?fit=640%2C427&ssl=1
427
640
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-04-26 08:28:402023-04-26 08:35:56Exceptions are Confusing. Here’s When to Use Them.
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/04/HTTP-status-codes.png?fit=1000%2C500&ssl=1
500
1000
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-04-19 08:28:002023-04-19 08:30:28There’s Something Seriously Wrong with an HTTP Status Code
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/04/Not-Wanting-To-Break-Anything.png?fit=1000%2C400&ssl=1
400
1000
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-04-12 08:25:422023-04-12 08:33:46The Danger of ‘Not Wanting to Break Anything’
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/04/Shotgun-Surgery.png?fit=1350%2C750&ssl=1
750
1350
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-04-05 08:36:422023-04-14 06:31:10Beware of Shotgun Surgery
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/03/FactoryMethod.png?fit=1000%2C750&ssl=1
750
1000
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-03-29 10:35:562023-03-29 10:35:56The Factory Method Pattern
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/03/Transactions-Double-1.png?fit=1142%2C286&ssl=1
286
1142
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-03-22 08:25:472023-03-22 08:25:47The Financial Double-Record Anti-Pattern
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/03/ChainOfResponsibility.png?fit=2100%2C600&ssl=1
600
2100
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-03-15 09:10:112023-03-15 10:18:07The Chain Of Responsibility Design Pattern
https://i0.wp.com/codecoach.biz/wp-content/uploads/2023/03/UseCase.png?fit=1839%2C750&ssl=1
750
1839
Olaf Thielke
https://codecoach.co.nz/wp-content/uploads/2020/08/code-coach.png
Olaf Thielke2023-03-08 09:22:302023-03-08 09:22:30What Is A Use Case?