Suggestion: Array functions: += and -= and *=

My current project involves a lot of manipulation of arrays. Say I want to increment an array, I need to do:

X: currx

y: curry

set value: array.at(currx,curry) + 1

I would like to be able to do += 1 or -= 1 or *= 0.99 or similar operations to help simplify my code and reduce the chance of errors. When currx and curry themselves are the values of an array stuff can get very messy and I may accidentally use the wrong currx and curry.

?

Just use a combination of local variables and functions?

Also use the comment functionality of C2 to keep track of what's what.