总是会面临，根据选择的不同的值，获得不同 函数。就类似于switch 中的问题

switch Fcase 'F1'fobj = @F1;lb=-100;ub=100;dim=30;case 'F2'fobj = @F2lb=-10;ub=10;dim=30;end  function o = F1(x)
% o = sum(x.^2);           This is the advantage of matrix 
o=sum((x).^2);
end% F2function o = F2(x)
o=sum(abs(x))+prod(abs(x));
end