persistent init and rng

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DM
DM on 23 Apr 2015
Commented: Image Analyst on 23 Apr 2015
I found the following command in a built in function in MATLAB, can anyone please explain to me what they mean?
persistent init;
if isempty(init)
init = 1;
rng(seed);
end
Thanks
  1 Comment
Image Analyst
Image Analyst on 23 Apr 2015
Which function? If you say "doc rng" (or whatever function you want), does it bring up the help?

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