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`Table::clear` and `Table::replace`

docs/md/explanation/table/clear_and_replace.md

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Table::clear and Table::replace

Calling Table::clear will remove all data from the underlying Table. Calling Table::replace with new data will clear the Table, and update it with a new dataset that conforms to Perspective's data types and the existing schema on the Table.

<div class="javascript">
javascript
table.clear();
table.replace(json);
</div> <div class="python">
python
table.clear()
table.replace(df)
</div>