Reminder: Different operations can lead to significant differences in efficiency!

[mchestnut163]

1.Obj.S['foo'] := 'bar'; 2.Obj.add('foo').asstring= 'bar'; The efficiency difference between the above two operation methods is huge

[hydrobyte]

Hi,

It is like this by design.

• Add() method does not check for previous items with the same key in TList internal data structure.

• S[] and other shortners do check for previous items.

In conclusion, if you are sure your data do not have key duplication, use Add(). If you are not so sure, you can use a combination of HasKey() and Add() or use S[] shortners.

Thanks for the reminder.

[hydrobyte]

Done.