Re: structure vs. vector

[Etienne Grossmann]

  You are right !? Structures are quicker. What about then adding 
sthing like :

if is_struct (ctl)
if struct_contains (ctl, "crit") && ! isnan (ctl.crit ), crit  = ctl.crit ; end
if struct_contains (ctl,  "tol") && ! isnan (ctl.tol  ), tol   = ctl.tol  ; end
if struct_contains (ctl, "narg") && ! isnan (ctl.narg ), narg  = ctl.narg ; end
if struct_contains (ctl,"maxev") && ! isnan (ctl.maxev), maxev = ctl.maxev; end
if struct_contains (ctl,  "isz") && ! isnan (ctl.isz  ), isz   = ctl.isz  ; end
if struct_contains (ctl,  "rst") && ! isnan (ctl.rst  ), rst   = ctl.rst  ; end
else
  [old code]
end

 So you can have a struct control variable or a vector control variable.
Or even, for about the same price (I guess) named variables by prefixing the
above code w/

if isstr (ctl)           # Assume named arguments
  ctl = struct (all_va_args);
end

  In fact, there is some overhead, since struct calls eval ...

  Etienne



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