Dependency Injection

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• Q227: How does EK9 validate dependency injection at compile time?
• Q228: Why does registration order matter in EK9 applications?
• Q229: How does EK9 prevent circular dependencies?
• Q230: What happens if I forget to register a dependency in EK9?
• Q231: How do programs connect to applications for dependency injection?
• Q232: How do components inject other components in EK9?
• Q233: Can dynamic classes use dependency injection in EK9?
• Q234: What is the lifecycle of injected components in EK9?
• Q324: What is the EK9 equivalent of Spring @Autowired?
• Q325: What is the EK9 equivalent of Spring @Component and @Service?
• Q326: What is the EK9 equivalent of Spring @Bean and @Configuration?
• Q327: How does EK9 DI compare to Spring Boot auto-configuration?
• Q328: How does EK9 DI compare to Quarkus build-time injection?
• Q329: How does EK9 DI compare to Google Guice modules?
• Q330: Does EK9 support DI scopes like singleton, prototype, and request?
• Q331: How do I test components with injected dependencies?
• Q332: What is the runtime overhead of EK9 DI compared to frameworks?
• Q333: How do I manage transactions with try-with-resources in EK9?
• Q334: How do I add transactions with trait delegation in EK9?
• Q335: How do I use higher-order functions for transaction management?
• Q336: How do dynamic functions solve transaction API pollution?
• Q337: Can I use aspects for transactions like Spring @Transactional?
• Q338: How does EK9 prevent partial transaction commits?
• Q339: Which transaction management pattern should I use in EK9?
• Q340: Why are EK9 transaction patterns better for AI-generated code?
• Q862: Why does EK9 limit injection fields per component?
• Q957: Why can I only inject components, not classes, in EK9?
• Q960: Why does EK9 limit injection fields per component to four?
• Q961: What is the maximum number of registrations in an EK9 application block?
• Q1105: Create a Logger component with a name field and a log method.
• Q1106: Copy a component and check if the copy equals the original.
• Q1107: Check the set and unset states of a component's fields.
• Q1108: Extend a BaseService component and add a version field to the child.
• Q1109: Mutate a Counter component's state through increment and reset methods.
• Q1110: Register a Logger service and inject it into a program.
• Q1111: Register dependencies in the correct order so a service can inject them.
• Q1112: Inject a Logger dependency into a component's field using the ! suffix.
• Q1113: Define an application that wires three components together.
• Q1114: Wire an application with all dependencies correctly to pass compile-time DI validation.
• Q1183: Register a concrete Logger as an abstract Logger type for dependency injection.
• Q1290: What does EK9 error E50040 mean when I write an abstract method in a component and how do I fix it?
• Q1291: Why does E50040 fire on my abstract method in a class but not in a trait?
• Q1312: Why can't I instantiate a program or application with a constructor call in EK9?
• Q1313: Why does EK9 reject an application that has no register statements?