Associative array/Iteration: Difference between revisions

=={{header|MATLAB}} / {{header|Octave}}==

Associative arrays are not native to Matlab and Octave, but one can (mis-)use "struct" as an associative array.

<lang Matlab> s.a = 1;

s.b = 2;

s.C = [3,4,5];

keys = fieldnames(s);

for k=1:length(keys),

key = keys{k};

value = getfield(s,key); % get value of key

disp(value);

s = setfield(s,key,-value); % set value of key

end;

disp(s) </lang>

Output:

<pre> 1

2

3 4 5

>> disp(s)

scalar structure containing the fields:

a = -1

b = -2

C =

-3 -4 -5</pre>