scala> import breeze.linalg._
import breeze.linalg._
scala> val m=DenseMatrix.rand(5,5);
m: breeze.linalg.DenseMatrix[Double] =
0.24395858378801394 0.8354351130929839 0.05721813398970854 ... (5 total)
0.16046192824759975 0.54572535556644 0.08009458959788163 ...
0.13265266067188985 0.46300840713797176 0.36120544029978274 ...
0.22215306459838802 0.9562013067067475 0.6623151362850127 ...
0.2782197377430293 0.6574073533001343 0.9185751338706425 ...
scala> m :* 2
<console>:12: error: could not find implicit value for parameter op: breeze.linalg.operators.BinaryOp[breeze.linalg.DenseMatrix[Double],Int,breeze.linalg.operators.OpMulScalar,That]
m :* 2
^