title: Does R have a means of saving a Decimal for arrow into parquet files?
body: <p>In python there's the <code>decimal</code> module whereby you can store decimal values without fear of falling into the floating point trap.  Does <code>R</code> have a similar package?</p>
  <p>In particular I'm looking for a way to save an R object to an arrow table/parquet file where one or more columns are Decimal type.</p>
  <p>If I do</p>
  <pre><code>abc=data.table(a=c(1.23,2.34,3.45))
  as_arrow_table(abc, schema=schema(field('a', decimal(3,2))))
  </code></pre>
  <p>I get <code>Error: NotImplemented: Extend</code></p>