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# (File):setBuffer

Available since LÖVE 0.9.0
This function is not supported in earlier versions.

Sets the buffer mode for a file opened for writing or appending. Files with buffering enabled will not write data to the disk until the buffer size limit is reached, depending on the buffer mode.

File:flush will force any buffered data to be written to the disk.

## Function

### Synopsis

success, errorstr = File:setBuffer( mode, size )

### Arguments

`BufferMode mode`
  The buffer mode to use.
`number size (0)`
  The maximum size in bytes of the file's buffer.

### Returns

`boolean success`
  Whether the buffer mode was successfully set.
`string errorstr (nil)`
  The error string, if the buffer mode could not be set and an error occurred.

## See Also

- File
- File:getBuffer
- File:write
- File:flush

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