Re-read my last post. If you know that the method will accept x number of arguments. And your array may have anywhere from 1 to x possible values then write a function to pad your array with (x - arraylen) null values.
Like this: <cfset positionalArgs = ['foo', 'bar', 42]> <cfset positionalArgs = padMyArray(positionalArgs,10) /> <cfset myFunction(positionalArgs[1], positionalArgs[2], positionalArgs[3], positionalArgs[4], positionalArgs[5], positionalArgs[6], positionalArgs[7], positionalArgs[8], positionalArgs[9], positionalArgs[10] )> <cffunction name="padMyArray"> <cfargument name="arrIN" type="array" required="true"> <cfargument name="arrLen" type="numeric" required="true"> <cfloop from="#arraylen(arrIN)#" to="#arrlen#" index="x"> <cfset ArrayAppend(arrIN,"")> </cfloop> <cfreturn arrIN /> </cffunction> <cffunction name="myFunction"> <cfargument name="arg1" required="false" default="not defined"> <cfargument name="arg2" required="false" default="not defined"> <cfargument name="arg3" required="false" default="not defined"> <cfargument name="arg4" required="false" default="not defined"> <cfargument name="arg5" required="false" default="not defined"> <cfargument name="arg6" required="false" default="not defined"> <cfargument name="arg7" required="false" default="not defined"> <cfargument name="arg8" required="false" default="not defined"> <cfargument name="arg9" required="false" default="not defined"> <cfargument name="arg10" required="false" default="not defined"> <cfdump var="arg1: #arg1#"> <cfdump var="arg2: #arg2#"> <cfdump var="arg3: #arg3#"> <cfdump var="arg4: #arg4#"> <cfdump var="arg5: #arg5#"> <cfdump var="arg6: #arg6#"> <cfdump var="arg7: #arg7#"> <cfdump var="arg8: #arg8#"> <cfdump var="arg9: #arg9#"> <cfdump var="arg10: #arg10#"> </cffunction> On Wed, Oct 6, 2010 at 2:16 PM, enigment <[email protected]> wrote: > > Missing the point. The method already exists and has other callers, > who pass separate arguments by name or position. I'm not redesigning > its API to take an array of arguments. I want to generically pass in a > set of ordered arguments to it. > > Dave > > On Wed, Oct 6, 2010 at 1:57 PM, Michael Grant <[email protected]> wrote: > > > > I gave you a perfectly viable, easy to implement solution. > > > > > > > > > > On Wed, Oct 6, 2010 at 1:55 PM, enigment <[email protected]> wrote: > > > >> > >> Imagine an SES URL processor somewhat analogous to what Django > >> provides, with a regex match that captures specific segments of the > >> incoming URL and passes them to the requested method. Yes I know about > >> ColdCourse, and the related ColdBox plugin etc, I was just thinking > >> about alternate approaches. > >> > >> So yes, maybe it's unusual, but not irrational, or due to lack of > >> structure in my code. > >> > >> Please, can we not debate my motivation any more? If there are any > >> actual answers to the original question, I'd be interested in hearing > >> them, but frankly I doubt it. I've been doing CF for quite a while, > >> and didn't know of one, so I thought I'd ask around, but this keeps > >> focusing on "larger issues". That's a Good Thing in many cases, but > >> actually not here. I'm asking if there's a language feature I'm not > >> aware of to accomplish this, nothing more. > >> > >> Dave > >> > >> > >> On Wed, Oct 6, 2010 at 1:34 PM, Michael Grant <[email protected]> wrote: > >> > > >> > It's also pretty unusual to not have any idea how many arguments you > are > >> > passing into a method. There are many more elegant approaches to your > >> switch > >> > suggestion. The primary one being writing code that has structure and > >> passes > >> > in the expected amount of arguments each time. Another one would be > that > >> > since you know how many arguments you are expecting in the method > perhaps > >> > write a function to loop over and pad your array with null values if > they > >> > aren't defined. Then your call to the method can always pass in the > >> expected > >> > amount of arguments. > >> > > >> > > >> > > >> > > >> > On Wed, Oct 6, 2010 at 1:13 PM, enigment <[email protected]> wrote: > >> > > >> >> > >> >> It's unusual for a method to take an array of its arguments, rather > >> >> than individual ones. Situation is something like a dispatcher; the > >> >> methods already have defined arguments, say > Widgets.search(widgetName, > >> >> widgetCategory, widgetID). It'd be pretty weird for it to take an > >> >> array containing those three arguments. The layer I'm talking about > >> >> wants to call that, but only has an array of argument values, in > >> >> order. > >> >> > >> >> Not to be cranky, but while there's room for debate on why I want to > >> >> do this, this isn't that conversation. If there's no more elegant > >> >> approach than the switch strategy I mentioned, I'll probably ditch > >> >> this entire route. I first wanted to check if anyone could think of a > >> >> way to accomplish this in the CFML language, out of curiosity and to > >> >> maybe learn something that might be useful some day, as well to get > it > >> >> done -- there's lots of smart and experienced folks out there. I > >> >> didn't mean to discuss whether it's worth doing. > >> >> > >> >> Thanks, > >> >> Dave > >> >> > >> >> On Wed, Oct 6, 2010 at 12:42 PM, Michael Grant <[email protected]> > wrote: > >> >> > > >> >> > Dave, > >> >> > > >> >> > Why don't you just pass in the array? > >> >> > > >> >> > <cfset positionalArgs = ['foo', 'bar', 42] /> > >> >> > <cfset myFunction(positionalArgs) /> > >> >> > <cffunction name="myFunction"> > >> >> > <cfargument name="positionalArgs" type="array"> > >> >> > <cfloop from="1" to="#arraylen(positionalArgs)#" index="x"> > >> >> > <cfdump var="#x#: #positionalArgs[x]#"><br /> > >> >> > </cfloop> > >> >> > </cffunction> > >> >> > > >> >> > > >> >> > On Wed, Oct 6, 2010 at 12:38 PM, enigment <[email protected]> > wrote: > >> >> > > >> >> >> > >> >> >> @Michael: What I'm looking for is the positional equivalent of > >> >> >> argumentCollection. If it wasn't for that, you'd think the same > about > >> >> >> passing a structure of arguments -- any object you pass will be > >> >> >> treated as a single argument. But argumentCollection trumps that. > I > >> >> >> even tried a structure with keys 1, 2, 3, and passing that as > >> >> >> argumentCollection (unnamed arguments appear inside the function > as > >> 1, > >> >> >> 2, and 3 if you dump arguments), no joy. > >> >> >> > >> >> >> @Jason: Clearly, calling a method three times, each time with one > >> >> >> argument, is very different than calling it once with all three. > Say > >> >> >> they're search fields, lastName, FirstName, ZIP; you want the > search > >> >> >> to run with all three of them in place, not separately for each > one. > >> >> >> (Not sure why you went with an iterator rather than just indexing > >> over > >> >> >> the array, but it doesn't matter, not what I need to do.) > >> >> >> > >> >> >> Thanks for the ideas though. This just may not be possible. > >> >> >> > >> >> >> Dav > >> >> > >> >> > >> > > >> > > >> > >> > > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology-Michael-Dinowitz/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:337918 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
