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# NSTextCheckingResult.CheckingType

These constants specify the type of checking the methods should do. They are returned by [`resultType`](/documentation/Foundation/NSTextCheckingResult/resultType).

```
struct CheckingType
```

## Topics

### Constants

[`orthography`](/documentation/Foundation/NSTextCheckingResult/CheckingType/orthography)

Attempts to identify the language

[`spelling`](/documentation/Foundation/NSTextCheckingResult/CheckingType/spelling)

Checks spelling.

[`grammar`](/documentation/Foundation/NSTextCheckingResult/CheckingType/grammar)

Checks grammar.

[`date`](/documentation/Foundation/NSTextCheckingResult/CheckingType/date)

Attempts to locate dates.

[`address`](/documentation/Foundation/NSTextCheckingResult/CheckingType/address)

Attempts to locate addresses.

[`link`](/documentation/Foundation/NSTextCheckingResult/CheckingType/link)

Attempts to locate URL links.

[`quote`](/documentation/Foundation/NSTextCheckingResult/CheckingType/quote)

Replaces quotes with smart quotes.

[`dash`](/documentation/Foundation/NSTextCheckingResult/CheckingType/dash)

Replaces dashes with em-dashes.

[`replacement`](/documentation/Foundation/NSTextCheckingResult/CheckingType/replacement)

Replaces characters such as (c) with the appropriate symbol (in this case ©).

[`correction`](/documentation/Foundation/NSTextCheckingResult/CheckingType/correction)

Performs autocorrection on misspelled words.

[`regularExpression`](/documentation/Foundation/NSTextCheckingResult/CheckingType/regularExpression)

Matches a regular expression.

[`phoneNumber`](/documentation/Foundation/NSTextCheckingResult/CheckingType/phoneNumber)

Matches a phone number.

[`transitInformation`](/documentation/Foundation/NSTextCheckingResult/CheckingType/transitInformation)

Matches a transit information, for example, flight information.


---

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