func clearRecord()

The function clearRecord() removes all data from internal memory and fills it with zeroes (0x00) or spaces (0x20).
You can call this function before calling setField(), setMemoBuf().

{
    // your code
    dbf.clearRecord()
    dbf.setField(0, asString:"some value", asDouble:0)
    dbf.setField(1, asString:nil, asString:123.45)
    dbf.appendRecord(false)
    // your code
}