What would you do?

2013 7 3
2 个回答
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Suppose you have a string like
rhs = 'x*cos(x)/(t+1)';
and that you want to create a function handle... would you do
fHandle = str2func(['@(t,x)',rhs])
or
fHandle = eval(['@(t,x)',rhs]);
or
?
Can you explain why?

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Chad Gilbert
Chad Gilbert 2013-7-3

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I'd tend to choose str2func, merely because it makes it more obvious what I'm anticipating as an output.

更多回答（1 个）

1 个投票

Don't use eval - EVER!
There is a whole documentation page that should answer 'why?'
http://www.mathworks.com/help/matlab/matlab_prog/string-evaluation.html

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