Comma Separated Lists Generated from Structure Arrays - GNU Octave
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#### 6.3.2 Comma Separated Lists Generated from Structure Arrays

Structure arrays can equally be used to create comma separated lists. This is done by addressing one of the fields of a structure array. For example:

         x = ceil (randn (10, 1));
         in = struct ("call1", {x, 3, "last"},
                      "call2", {x, inf, "first"});
         out = struct ("call1", cell (2, 1), "call2", cell (2, 1));
         [out.call1] = find (in.call1);
         [out.call2] = find (in.call2);