Alex, I don't know if you and I are reading the dictionary in the same way:
On 29/05/2012, at 9:00 AM, Alex Tweedly wrote: [...] > The dictionary entry for constant says: >> >> If you place the constant statement in a handler, you can use the constant >> anywhere in the handler. If you place the constant statement in a script >> outside any handler, you can use the constant anywhere in the handlers of >> that script. > NB - "can use the constant anywhere *in the handlers* of that script". > > That was a reasonable limitation in traditional Livecode - but seems less > reasonable in the context of revserver. [...] I *think* what the dictionary means - and please someone correct me if I'm wrong - is that there are 2 ways to declare a constant value: INSIDE a handler (like inside a mouseUp, enterField, etc.), or OUTSIDE any handlers (the same way you'd declare a SCRIPT VARIABLE). The 2 ways would be like this: INSIDE A HANDLER on enterField constant kIncrease = 3 answer kIncrease end enterField The problem with declaring the constant that way, is that it is defined only for THAT specific 'enterField' handler. If you also had a second handler that expected to use that value, such as...: on closeField answer kIncrease end closeField ...that would fail, because 'kIncrease' is defined only inside 'enterField'. To overcome that, you can declare the constant like this: OUTSIDE HANDLERS contant kIncrease = 3 on enterField answer kIncrease end enterField on exitField answer kIncrease end exitField ...would work, as 'kIncrease' will now be available to *all* handlers. In the context of revServer, this still applies. For instance: if your revServer application is just one big script - ie., a 'main' script that 'includes' or 'requires' others (which is, in effect, the same as having one long script) - then a constant declaration outside all handlers will in effect make it a global constant. I hope this helps! -- Igor Couto Sydney, Australia _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
