// Investigate use of the Defer method. Deprecated?
private static string DeferedStatementRepro(REngine engine)
{
// Looking at the issues reported in https://rdotnet.codeplex.com/discussions/458547
// indeed the R.NET documentation page as of 22 Sept 2013 is off as to what Defer method there is.
// The following memory stream is a workaround out of curiosity: not something intended for ongoing use.
// With the memory stream workaround, it bombs.
// Not sure whether this is because of the conversion to byte, but unlikely to be a false positive.
string deferedStatement = "x <- 3";
var byteArr = Array.ConvertAll(deferedStatement.ToArray(), c => Convert.ToByte(c));
using (var stream = new MemoryStream(byteArr))
{
// Defer method delays an effect on the R environment.
var e = engine.Defer(stream);
// Error: GetSymbol method returns null at the moment.
// NumericVector x = engine.GetSymbol("x").AsNumeric();
// Evaluates the statement.
e.ToArray();
}
return(deferedStatement);
}