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# CFBitVectorFlipBits(_:_:)

Flips a range of bit values in a bit vector.

```
func CFBitVectorFlipBits(_ bv: CFMutableBitVector!, _ range: CFRange)
```

## Parameters

`bv`

The bit vector to modify.

`range`

The range of bit values in `bv` to flip. The range must not exceed `0…N-1`, where `N` is the count of the vector.

## See Also

[`CFBitVectorGetCount(_:)`](/documentation/CoreFoundation/CFBitVectorGetCount(_:))

Returns the number of bit values in a bit vector.


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