On 27 Sep 2012, at 15:51, Marcos Douglas wrote:
What is the advantages to the compiler return the error bellow?
ERROR: unit1.pas(31,3) Error: Duplicate identifier "FooVar"
Why the compiler do not respect the scope, ie, the local variable
should have the preference, I'm not right?
Yes, but the human brain is very good at confusing such things, and
it's very easy to accidentally assign something to a local variable
instead of to a field.
Not? Why I can use a unit name as a property in my class, so? (see
bellow the "StdCtrls" property name).
Because the compiler only checks for identifiers defined in the
current unit. You also cannot assign anything to a "unit", nor "read"
from it, so there is generally less ambiguity (it still can exist in
case the field is a record/class/object and contains fields that have
the same name as global variables declared in the unit, but that's not
exactly common).
If I use {mode delphi} I can compile... I know. Why not in {mode
objfpc} too?
Because {$mode objfpc} makes different trade-offs compared to {$mode
delphi}. You can pick the one you like best.
Jonas
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