"I. Szczesniak" wrote:
> On 6/25/08, Cedric Blancher <[EMAIL PROTECTED]> wrote:
> > Does ksh have a way to copy shell functions? I have to write a script
> > which has to add a discipline function to variables loaded from a file
> > via . (which is the output of another application and can't be
> > changed) and the number goes into the tens of thousands.
> > I'm using eval "function ${var}.get { $function }" but this is slow
> > and uses much memory per variable ($function contains 400 bytes of
> > script code) and the system has only memory for 128MB.
>
> Try this:
>
> function function_common
> {
> $function
> }
>
> eval "function ${var}.get { function_common \"[EMAIL PROTECTED]" }"
IMO it may be nice to think about the old idea for "nameref for
functions", e.g. "nameref -f funcptr = myfunction" or "function -n
funcptr = myfunction". The case above (and many other complex issues
related to get/set/unset functions and other cases where C/C++/JAVA code
would use function pointers) could be reduced to a simple "function
pointer (or better: nameref) assignment".
The example above could then be reduced to:
-- snip --
function function_common
{
$function
}
eval "function -n ${var}.get = function_common"
-- snip --
... and this would even be faster since we could replace the whole {
argument expansion pass for "$@" + the function call itself } with a
direct function call through the function nameref... and it may save
some memory since no wrapper functions (e.g. the wrapper which calls
"function_common" in Irek's example) need to be created.
----
Bye,
Roland
--
__ . . __
(o.\ \/ /.o) [EMAIL PROTECTED]
\__\/\/__/ MPEG specialist, C&&JAVA&&Sun&&Unix programmer
/O /==\ O\ TEL <currently fluctuating>
(;O/ \/ \O;)
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