Chris,
I have not done any benchmarks on cfscript vs. tags, but if there were
significant performance differences, I would expect to have heard of
these differences by now. Phillip's argument is that there is a
difference in compiled code, but I did not see any reason to conclude
that there is an observable difference in performance.
The popuplar O-O frameworks in CF, like Mach-II and Model-Glue, use
tags in the framework code that I have looked at, and those frameworks
have had significant time put into them in peformance tuning.
Jon
On 12/17/06, Christopher Jordan <[EMAIL PROTECTED]> wrote:
> Jon,
>
> Here's a snippet of a discussion my local CFUG just had on this subject
> (in reverse order so you can read it top down):
>
> On 11/28/06, Eric Knipp <[EMAIL PROTECTED]> wrote:
> > It was my understanding that
> >
> > <cfscript>
> > if (a eq b) { a = c; }
> > </cfscript>
> >
> > is the same performance-wise as
> >
> > <cfif (a eq b)>
> > <cfset a = c />
> > </cfif>
> >
> > as the CF compiler turns them into the same thing .. I am pretty sure
> there
> > have been other discussions on this topic. As of CFMX I thought
> there was
> > no performance difference?
> >
>
> On 11/28/06, Phillip Holmes <[EMAIL PROTECTED]> wrote:
> > Nope. Your example may be immeasurable, but with more advanced
> > functionality, that is not the case.
> >
> > Obviously, ColdFusion is middle ware for your middle ware. It is a
> > collection of servlets that consolidate Java functionality into one
> > tidy command. Calling a tag when you can script it out with one
> > cfscript block, simply creates another import and more code in the
> > final JIT. If you write the code in cfscript, it is closer to the end
> > result (Java) than if CF has to import more servlet libraries to get
> > to the final result.
> >
> > Get yourself a java decompiler, write the code both ways in two
> > different files, decompile the JIT, and you'll see what I mean. Most
> > of all, turn your debug times on and look at the difference.
> >
> > --Phillip Holmes
>
> I think it's actually a pretty common practice.
>
> Cheers,
> Chris
>
> Jon Gunnip wrote:
> > Chris,
> >
> > I would be wary of using cfscript just for supposed performance gains
> > over tags. My understanding is that those gains were eliminated (or
> > reduced to the point of insignificance) in CF 6.x and 7.x. Here are
> > what I see as the pros and cons of cfscript. These points are largely
> > a matter of preference:
> >
> > Pros of cfscript
> > -- more readable
> > -- less typing
> > -- more like other languages (Java, JavaScript) - sometimes can copy
> > Java snippets and they function with little modification in cfscript
> >
> > Cons
> > -- many pieces of cf functionality do not exist in cfscript (e.g.
> > throw, dump, abort) or are awkward (looping over queries) - we have a
> > CFScript.cfm include with functions like Throw(), Dump(), Abort() to
> > get around this, but for cfquery we always use tags
> > -- might be inconsistent with other code written in tags; I like to
> > see consistency throughout an application
> >
> > Jon
> >
> >
> >
> >> I was told by some members of my local CFUG that
> >> writing code within CFScript tags whenever possible is faster (performance
> >> wise), so I'm giving it a go.
> >>
> >
> >
>
>
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