Am 19.03.2013 09:27, schrieb Martin Schreiber:
On Tuesday 19 March 2013 09:06:31 leledumbo wrote:
Really? No gain in the beloved readability?
Not for me, I always initialize code in "executable" section, keeping the
declaration section clean. That's what "readable" to me.
And it seems to me a "const" should not be changed by code. ;-)
Even if it's allowed, you're declaring typed constant, which is not a real
constant and has the same effect as initialized variable (e.g. you can
change the value later on). It only differs (from initialized var) when the
assignment happens inside a routine.
Delphi has {$J-} in order to set them readonly.
Do you know whether Delphi has by default $J+ or $J-?
Another problem with Free Pascal in this context is that it is AFAIK not
possible to define forward types which could be used as parameters for
procedures used as procedure variables in later type definitions.
In case of records, classes and objects you can work around this with
nested types (Note: for records the modeswitch advancedrecords is
required in non-Delphi modes):
=== code begin ===
type
TMyRecord = record
public type
TTest = procedure(aRec: TMyRecord);
public var
Test: TTest;
end;
=== code end ===
And I just noticed: this example does not work in Delphi...
Regards,
Sven
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