[fpc-devel] Stringlist sortstyle ssluser

[Michael Van Canneyt]

On Wed, 26 Dec 2018, Franz Müller wrote:

> In the current implementation of TStringlist, there is a property 
> SortStyle, which is somewhat similar to the property Sorted. However, it 
> is different from sorted in that it allows 3 values: sslnone, which 
> corresponds to sorted=false, sslAuto, which corresponds to sorted=true, 
> and sslUser, which correspnds to ????
>
> This third value introduces some inconsistency. If the user is 
> responsible for sorting, as is written in the documentation, this must 
> be meant to be done by caling customsort - otherwise it would make 
> absolutey no sense to leave sorting to the user.

Not correct, it is meant for the cases when the user knows the list is sorted.

> And in addition the 
> procedures used for comparing auto-sorted procedures are local to the 
> Stringlist unit, so the application programmer would not even be able to 
> use these methods for sorting himself.

No, because you can load data from an already sorted file. 
Then it makes no sense to sort again.

Michael.