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Add autowiring to array to tutorial

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Mike Bierlee 2015-07-04 14:36:41 +02:00
parent 9d5b4e97a7
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TUTORIAL.md
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@ -111,3 +111,20 @@ class BluePaint {
} }
``` ```
If you registered multiple concrete types to the same supertype and you do not resolve using a qualifier, a ResolveException is thrown stating that there are multiple candidates for the type to be resolved. If you registered multiple concrete types to the same supertype and you do not resolve using a qualifier, a ResolveException is thrown stating that there are multiple candidates for the type to be resolved.
Autowiring all registered instances to an array
-----------------------------------------------
If you have registered multiple concrete types to a super type, you can autowire them all to an array, in which case you can easily operate on them all:
```d
// Color is an interface, Blue and Red are classes implementing that interface
class ColorMixer {
@Autowire
public Color[] colors;
}
dependencies.register!(Color, Blue);
dependencies.register!(Color, Red);
auto mixer = dependencies.resolve!ColorMixer;
```
Member mixer.colors will now contrain instances of Blue and Red. The order of the instances is not guarenteed to be that of the order in which they were registered.