Exit function early and return output

Question

Toder 2020-4-23

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/520317-exit-function-early-and-return-output

评论： Toder 2020-4-24

I have a rather long function with a single output. In a special case, the output can be calculated without executing the majority of the function. Currently I use an if-statement to bypass the remaining code in the special case, but it feels clumsy to have an if-statment around lots of code. In C++, one could avoid the if-statement with two return statements; however the return function in MATLAB exits the function without returning the output variable. Is there a similar trick in MATLAB to avoid nesting the majority of my function in an if-statement? I know I could use another function to execute the else-statement, but that seems just as awkward.

% CURRENT CODE
function out = myfunc(a,b,c)
% Some calculations
if a == 1 % Special case
    out = foo;
else
    % Lots of calculations
    out = bar;
end
end

% "IDEAL" CODE WHICH DOESN'T WORK
function out = myfunc(a,b,c)
% Some calculations
if a == 1 % Special case
    return foo
end
% Lots of calculations
return bar
end