MATLAB Programming

12 Programming Tips
are useful when you want to evaluate a statement only when certain
conditions are satisfied.
In this example, MATLAB does not execute the function myfun unless its
M-file exists on the current path.
comp = (exist('myfun.m') == 2) && (myfun(x) >= y)
For more information: See “Short-Circuit Operators” on page 3-25 in the
MATLAB Programming documentation.
Changing the Counter Variable within a for Loop
You cannot change the value of the loop counter variable (e.g., the variable
k in the example below) in the body of a for loop. For example, this loop
executes just 10 times, even though k is set back to 1 on each iteration.
for k = 1:10
disp(sprintf('Pass %d', k))
k = 1;
end
Although MATLAB does allow you to use a variable of the same name as the
loop counter within a loop, this is not a recommended practice.
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