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# parserDidStartDocument(_:)

Sent by the parser object to the delegate when it begins parsing a document.

```
optional func parserDidStartDocument(_ parser: XMLParser)
```

## Parameters

`parser`

A parser object.

## See Also

  [Event-Driven XML Programming Guide](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/XMLParsing/XMLParsing.html#//apple_ref/doc/uid/10000186i)


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