Reference struct field with an index and not it's name

I want to randomly reference different fields of a structure without naming the field, and ideally without using an if statement.

I currently have a structure like so:

 s = struct;
 s.field1 = {1; 2; 3; 4; 5};
 s.field2 = {6; 7; 8; 9; 10};

I'm then generating a random number and want to access one of the fields depending on what the number is. E.g. if the random number is 1, access field1, if it's a 2, access field 2. I then want to be able to take specific numbers from within that field, so that I could get:

 >> a = s.(2){3, 1}           % (2) is the randomly generated number in this example
 >> b = s.field2{3, 1} 
 >> a == b

 ans = 

    logical

      1

I know I can do this with an if statement, but I want to avoid if statements if possible. Is it possible to do this in Matlab, or not?

Answer 1

[Stephen23]

You should use a non-scalar structure, and then this will be trivially easy:

s(1).field = [1; 2; 3; 4; 5];
s(2).field = [6; 7; 8; 9; 10];
N = randperm(numel(s),1);
s(N).field

[Daniel]

Thank you!