On Tue, Oct 29, 2013 at 5:05 PM, Dmitry Boyarintsev <skalogryz.li...@gmail.com> wrote: > On Tue, Oct 29, 2013 at 3:50 PM, Marcos Douglas <m...@delfire.net> wrote: >> >> Yes, works... but the language allow hide the unit name and nobody >> uses unit name as an identifier in 99% of cases, Am I right? So, >> problems can be happen. >> > From my experience I'd say no. > I actually had to use the explicit unit name in probably 2% of the code. > Back from Delphi days: some of the functions between WinAPI (windows.pas) > and VCL (sysutils.pas) are actually using the same name. > So specifying the exact unit name is required to get the code compiled > properly. > There were some collisions on MacOSX (carbon) type names with LCL type > names. > So it's not that unrare thing to happen. > > And as you've given example above. If I'm writing a unit that uses two > separate units with the same identifiers reused, I'd recommend to specify a > unit name explicitly. (Just not to rely on a compiler doing it right for > you). > uses > windows, graphics; > > var > wb : Windows.TBitmap; > gb : Graphics.TBitmap. > > or > > uses > windows, graphics; > > type // declare once, use everywhere > TWindowsBitmap = Windows.TBitmap; > TGraphicsBitmap = Graphics.TBitmap; > > > var > wb : TWindowsBitmap; > gb : TGraphicsBitmap. > > thanks, > Dmitry
Yep, this is a good tip if you have a couple of types and works. But, if you have two or more units that have many types and/or functions that have the same name, then this job -- create an alias -- is boring. I had this problem just one time in my life, I confess, but happened. But, little collisions happen easily -- using procedures/functions is more easy -- because, as you said, we only use the unit name as a prefix (2% code) only if we know, previously, that we should use. I guess I will not convince you, right? :) That's Ok. Regards, Marcos Douglas _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
