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A first attempt to make a general scheme fo hyperbolic systems
author Ylva Rydin <ylva.rydin@telia.com>
date Fri, 16 Sep 2016 14:51:17 +0200
parents 48b6fb693025
children
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function default_arg(s, val)
    if evalin('caller',sprintf('~exist(''%s'',''var'') || isempty(%s)',s,s))
        assignin('caller',s,val)
    end
end