parcellfun and rand

[Muhali]

Unlike cellfun, parcellfun appears to re-initialize the rand function in each
call. This is counter-intuitive.

octave:1> disp(parcellfun(1, @(x) rand, cell(1,1), "UniformOutput", false,
"verboselevel", 0))
{
  [1,1] =  0.32068
}
octave:2> disp(parcellfun(1, @(x) rand, cell(1,1), "UniformOutput", false,
"verboselevel", 0))
{
  [1,1] =  0.32068
}
octave:3> disp(cellfun(@(x) rand, cell(1,1), "UniformOutput", false))
{
  [1,1] =  0.32068
}
octave:4> disp(cellfun(@(x) rand, cell(1,1), "UniformOutput", false))
{
  [1,1] =  0.26259
}

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