angular-cn/modules/@angular/docs/cheatsheet/dependency-injection.md

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@cheatsheetSection
Dependency injection configuration
@cheatsheetIndex 10
@description
{@target dart}`import 'package:angular2/core.dart';`{@endtarget}
@cheatsheetItem
syntax(ts dart):
`{ provide: MyService, useClass: MyMockService }`|`provide`|`useClass`
syntax(js):
`{ provide: MyService, useClass: MyMockService }`|`provide`|`useClass`
description:
Sets or overrides the provider for MyService to the MyMockService class.
@cheatsheetItem
syntax(ts dart):
`{ provide: MyService, useFactory: myFactory }`|`provide`|`useFactory`
syntax(js):
`{ provide: MyService, useFactory: myFactory }`|`provide`|`useFactory`
description:
Sets or overrides the provider for MyService to the myFactory factory function.
@cheatsheetItem
syntax(ts dart):
`{ provide: MyValue, useValue: 41 }`|`provide`|`useValue`
syntax(js):
`{ provide: MyValue, useValue: 41 }`|`provide`|`useValue`
description:
Sets or overrides the provider for MyValue to the value 41.