how to replace "&&" in a loop

Question

Alan Robertson 2020-3-6

编辑： Adam Danz 2020-3-6

I would like not to use "&&" in this loop:

if a=x && b=y
    d=2
end

how can i replace it?

Answer 1

Adam Danz 2020-3-6

编辑：Adam Danz 2020-3-6

"how to replace "&&" in a loop"

If, for whatever reason, you don't like the && symbols,

if a==x && b==y
    d=2;
end

could be rewritten as

if all([a==x,b==y])

or

if all([isequal(a,x), isequal(b,y)])

or perhaps you'd like to use indexing as Stephen pointed out,

idx = a==x & b==y;
d(idx) = 2; 

Stephen23 2020-3-6

编辑：Stephen23 2020-3-6

If any of a, b, x, or y are non-scalar then your proposal will give a very different response to the original code.

I suspect that the OP actually has non-scalar data, and that indexing would be a much more suitable solution.

Adam Danz 2020-3-6

The original code would throw an error at if a=x but I'll up date my answer to cover the indexing interpretation.