i1 : m = mutableMatrix matrix{{1,2,3},{4,5,6}}
o1 = | 1 2 3 |
| 4 5 6 |
o1 : MutableMatrix
|
i2 : rowSwap(m,0,1)
o2 = | 4 5 6 |
| 1 2 3 |
o2 : MutableMatrix
|
i3 : m
o3 = | 4 5 6 |
| 1 2 3 |
o3 : MutableMatrix
|
The object rowSwap is a method function.