Is there an expression to add up all of the values in a column or row of an array without typing out each position individually?

What I've been doing so far was:

Set Global Value A

>ValueAtXY ("Array", 1, 1) + ValueAtXY ("Array", 1, 2) + ValueAtXY ("Array", 1, 3)

.. And so on. I'm sure there's a shorter way to write that out, am I correct?