I skipped a few in the middle, here, but one case where I use do and value is in lieu of having pointers, something that is not very easily replaced by an array. Using value and do allow me to write generic routines for populating forms and updating database tables afterwards, using the field names and variable names that match the name of the field in the database table.
If I was to use arrays to replace this behavior, I would also have to use object numbers on fields as the reference and then keep the objects numbered correctly, or use object ID's and then have a lookup table to correlate the index of the array, the object id, and the field name in the DB. On Thu, Feb 18, 2016 at 7:15 AM, Kay C Lan <lan.kc.macm...@gmail.com> wrote: > On Thu, Feb 18, 2016 at 7:52 PM, Mark Waddingham <m...@livecode.com> > wrote: > > > > >> Okay so this kind of code pattern originates from HyperCard which did > not > > have arrays. > > > > Upshot: There's no reason to use 'local' in do if you are initializing > the > > variable at that point. Indeed, one could argue that it is better to do: > > > > do "put empty into tVar_" & x > > > Which all goes to reinforce my initial feeling; the Example given in the > Dictionary for <local> is negative learning. Noted added to my ever > increasing pile of Dictionary improvements. > _______________________________________________ > 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 > -- On the first day, God created the heavens and the Earth On the second day, God created the oceans. On the third day, God put the animals on hold for a few hours, and did a little diving. And God said, "This is good." _______________________________________________ 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
