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# components

A dictionary containing the components of a type checking result.

```
var components: [NSTextCheckingKey : String]? { get }
```

## Discussion

Currently used by the transit checking result. The supported keys are located in [Keys for Transit Components](/documentation/Foundation/keys-for-transit-components).

## See Also

[`+  transitInformationCheckingResultWithRange:components:`](/documentation/Foundation/NSTextCheckingResult/transitInformationCheckingResult(range:components:))

Creates and returns a text checking result with the specified transit information.


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