---
title: flushCollection
framework: kernel
role: pseudoSymbol
path: kernel/oscollection/1808219-flushcollection
---

# flushCollection

Empties the collection, releasing any objects retained.

## Declaration

```occ
virtual void flushCollection() = 0; 
```

## Overview

Overview Subclasses implement this pure virtual member function to remove their entire contents. This must not release the collection itself.

## See Also

### Miscellaneous

- [copyCollection](kernel/oscollection/1808206-copycollection.md)
- [ensureCapacity](kernel/oscollection/1808212-ensurecapacity.md)
- [getCapacity](kernel/oscollection/1808225-getcapacity.md)
- [getCapacityIncrement](kernel/oscollection/1808233-getcapacityincrement.md)
- [getCount](kernel/oscollection/1808238-getcount.md)
- [getNextObjectForIterator](kernel/oscollection/1808244-getnextobjectforiterator.md)
- [haveUpdated](kernel/oscollection/1808248-haveupdated.md)
- [init](kernel/oscollection/1808252-init.md)
- [initIterator](kernel/oscollection/1808258-inititerator.md)
- [iteratorSize](kernel/oscollection/1808262-iteratorsize.md)
- [setCapacityIncrement](kernel/oscollection/1808267-setcapacityincrement.md)