I see TDataset has a method to get a list of fields. Is there something similar for type: record?

Say for instance I want to check which fields of a record are empty, how can I do it without having to specify each field manually?

Another example: If I want to compare two records of the same type to determine which fields differ. How do I do it and get only a list of the fields involved?

Regards
Johann

Instead of record type, try to use TParams class.
The TParams has items of TParam. You can use methods to know if the item is empty, casting .(AsInteger, .AsString,...), loop in all items without specifying the names, etc

Marcos Douglas

You could use a variants instead of records, an enumeration list could keep track of the "field names". Your user clause has to include variants.? Here is part of a procedure I used for another purpose: ?
var aRecord : variant;
? ??? i : integer;
begin???????????
for i := 0 to Dataset.FieldCount-1 do
??? aRecord[i]:= Dataset.Fields[i].Value;
?
A. G.

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whoops, forgot you have to include this line before the "for" clause:
?? aRecord:= VarArrayCreate([0, Dataset.FieldCount-1], varVariant);
?
A. G;

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Alejandro Gonzalo wrote

whoops, forgot you have to include this line before the "for" clause: aRecord:= VarArrayCreate([0, Dataset.FieldCount-1], varVariant);

Thanks.

The replies to my question made me realise that I will have to do do a lot of catchup. I recently came back to pascal after about 18 years of inactivity.

I did not even know about the 'variant' option and I know very little about TDataset and TParams and a lot of the (to me) new stuff added to the language.

Regards
Johann