On Fri, Jun 26, 2009 at 7:16 AM, Aryeh
Gregor<Simetrical+wikilist(a)gmail.com> wrote:
On Fri, Jun 26, 2009 at 6:33 AM, Roan
Kattouw<roan.kattouw(a)gmail.com> wrote:
The reason I believe breaking up templates
improves performance is
this: they're typically of the form
{{#if:{{{someparam|}}}|{{foo}}|{{bar}}}} . The preprocessor will see
that this is a parser function call with three arguments, and expand
all three of them before it runs the #if hook.
I thought this was fixed ages ago with the new preprocessor.
My understanding has been that the PREprocessor expands all branches,
by looking up and substituting transcluded templates and similar
things, but that the actual processor only evaluates the branches that
it needs. That's a lot faster than actually evaluating all branches
(which is how things originally worked), but not quite as effective as
if the dead branches were ignored entirely.
(I could be totally wrong however.)
-Robert Rohde