On Sat, 8 Dec 2018 22:03:11 +0100 (CET) Michael Van Canneyt <mich...@freepascal.org> wrote:
>[...] > In delphi, AS is second level, and 'is' is fourth level. > > http://docwiki.embarcadero.com/RADStudio/Tokyo/en/Expressions_(Delphi) > > If FPC does this differently, then I think this is an incompatibility. What has "as" to do with this thread? > >> logical (boolean) vs bitwise AND difference? > > > > I don't see where the bitwise should be involved here. There is no > > integer. > > The docs do not mention a different precedence lvl for > > logical/bitwise "and". > > Because to the best of my knowledge, here isn't any difference in > precedence, so there is nothing to explain. Yes, that's my point. Even if bitwise "and" would play a role here, the precedence would still be the same. > > It does not explain difference between "and" and "or". > > Of course it does. See section on Logical operators > > https://www.freepascal.org/docs-html/current/ref/refsu46.html > > or boolean operators > > https://www.freepascal.org/docs-html/current/ref/refsu47.html I looked at it, but I still don't understand. Perhaps you can explain the examples I gave? // compiles, but should fail: if o is TComponent and b then ; if o is TComponent or b then ; // compiles in fpc, but not in Delphi: if b or o is TComponent then ; // does not compile, correct if b and o is TComponent then ; Mattias _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
