Actually I'm quite sure that a try/catch block would be much faster than calling getMetaData(), especially for CFCs with more than 1 or 2 levels of inheritance.
On 6/6/07, Zaphod Beeblebrox <[EMAIL PROTECTED]> wrote: > > regardless of whether or not CF is duck typed or dynamic, the dynamic > languages I've used have all had this ability. Say you have an cfc > that expects a vehicle, you send it a bike and you send it a car, both > are vehicles, but both behave differently in some aspects. They may > both have a 'go', but only the car will have 'checkFuelLevel'. Which > would be the bigger performance hit, using a try catch block or just > checking the type or class of an object? > > > > On 6/6/07, Jake Pilgrim <[EMAIL PROTECTED]> wrote: > > You don't want to do that in Coldfusion - it is unnecessary and is > actually a performance hit as well. Read up on 'duck typing' - Sean Corfield > has a nice powerpoint that outlines this concept. You have to remember that > Coldfusion does not enforce strict typing; Coldfusion is not Java!! The > basic idea is that if you pass in a value (be it a string, query, object, > whatever) and it works within your code, it is of the correct type (if it > walks like a duck, quacks like a duck, it's a duck!). If you pass in a > numeric value to a function that is expecting a string, it's going to work. > If you pass in an object with properties x, y, and z to a function expecting > an object with properties x, y, and z it's going to work. If you were to > restrict your function to only accept objects with a type of > cfc.exampleObj, you are unnecessarily restricting the possible input of > your function as well as creating a performance loss by making your function > check the object's type in the first place! > > > > As defined by Wikipedia - http://en.wikipedia.org/wiki/Duck_typing > > > > Jake Pilgrim > > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| ColdFusion MX7 by Adobe® Dyncamically transform webcontent into Adobe PDF with new ColdFusion MX7. Free Trial. http://www.adobe.com/products/coldfusion?sdid=RVJV Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:280324 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
