How do I use a single or double pipe (vertical line) in an "or" statement?

Question

Sabbas 2012-7-2

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I have the following code

if k==39 or K==90
do that
else
do that
end

My question is how to replace the or statement

With | or with the double vertical line

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Answer 1

Luffy 2012-7-2

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在 MATLAB Online 中打开

 if k==39 || K==90
 do that
 else
 do that
 end

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Sabbas 2012-7-2

thanks luffy

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Answer 2

Daniel Shub 2012-7-2

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There are two main differences between | and . The first difference is that "short circuits", while | does not. This means that you can save yourself 1 comparison every time the if statement is evaluated. Assuming equal over head for | and , this means you can save some computation time. How much time you save depends on what proportion of the time your code spends checking for k equal to 39 takes. The second difference is that is a relatively new addition to MATLAB. I cannot easily find when they were introduced ( Loren's blog uses them in 2006). If you want your code to work with older versions of MATLAB, you cannot use .

Since I doubt that k==90 will be the bottle neck in your code, I would go with | for backwards compatibility.