---
title: merge
framework: driverkit
role: symbol
role_heading: Instance Method
path: driverkit/osset/merge
---

# merge

Adds the contents of an OSet to the set.

## Declaration

```occ
bool merge(const OSArray *otherArray);
```

## Parameters

- `otherArray`: The OSSet object containing the objects to be added.

## Return Value

Return Value true if any object from set are successfully added the receiver (or were already present), false otherwise.

## Discussion

Discussion This functions adds to the receiving set all objects from set that are not already in the receiving set. Objects added to the receiver are retained. In releases prior to 10.7, this function would return false if an object from set was already present in the set, or if set was empty. This is no longer the case, so this function correctly returns true when the semantic of merging is met.