On Tuesday 10 Jul 2007, Sean Corfield wrote: > In ColdFusion, all type checking is done at run time. So if you use > interfaces, you will get a *runtime* check, just like all the other > checks. And if you screw up, you'll get a runtime error. If you use > interfaces, the error just has different text in it (OK, that's a > *slight* oversimplification :)
I want Interfaces so I can aid other developers intergrating with my code- it explictly codes the contract. > Furthermore, since CF is a dynamic language, you can change methods on > an object after constructing it, thus removing any guarantees that an > interface would buy you. You remove a method or simply replace a > method with a different signature. The interface no longer applies. I *think* CF8's IsInstanceOf() will still throw an error if you've broken the contract. > interfaces - and don't need them. The only reason CF8 has interfaces > is to satisfy the CF-should-be-more-like-Java crowd. In general, it should not be 'java lite' - it should be it's own thing that makes hard stuff easy. But, people are building fairly complicated stacks of components, and Interfaces give you a measure of control. I don't need to worry about the contents of Bob's bar.cfc he just gave me - it extends an Interface so I can drop it straight in. -- Tom Chiverton Helping to carefully lead third-generation channels on: http://thefalken.livejournal.com **************************************************** This email is sent for and on behalf of Halliwells LLP. Halliwells LLP is a limited liability partnership registered in England and Wales under registered number OC307980 whose registered office address is at St James's Court Brown Street Manchester M2 2JF. A list of members is available for inspection at the registered office. Any reference to a partner in relation to Halliwells LLP means a member of Halliwells LLP. Regulated by the Law Society. CONFIDENTIALITY This email is intended only for the use of the addressee named above and may be confidential or legally privileged. If you are not the addressee you must not read it and must not use any information contained in nor copy it nor inform any person other than Halliwells LLP or the addressee of its existence or contents. If you have received this email in error please delete it and notify Halliwells LLP IT Department on 0870 365 8008. For more information about Halliwells LLP visit www.halliwells.com. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Upgrade to Adobe ColdFusion MX7 The most significant release in over 10 years. Upgrade & see new features. http://www.adobe.com/products/coldfusion?sdid=RVJR Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:283366 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
