src/test/scripts/functions/misc/FunPotpourriDefaultParams.dml

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foo = function(Matrix[Double] X, Matrix[Double] h=matrix(0,0,0))
  return (Matrix[Double] X2)
{
  print(nrow(h)+" "+ncol(h)+" "+length(h));
  #if( length(h)==0 ) # worked
  if( isEmpty(h) ) # didn't work
    h = 2 * X;
  X2 = h - X;
}

isEmpty = function(Matrix[Double] h)
  return (boolean R)
{
  R = (length(h) == 0);
}


X = rand(rows=100, cols=100, seed=7)

X2 = foo(X=X);

if( sum((X-X2)>1e-10)>0 )
  stop("Incorrect results: "+sum(X)+" "+sum(X2))