[Gambas-user] Sorting the human way

[Jorge Carrión]

Very interesting. Thanks a lot.

Regards


2013/10/23 Alain Baudrez <a.baudrez at ...626...>

> Hoi,
>
> I've never been happy with the standard sorting algorithm when dealing with
> lists of names. The human eye expects the names to be listed
> alphabetically, overlooking spaces, hyphens, accented characters, ...
>
> Assume the following names:
>      - Benoizy
>      - Benoît
>      - Benï Lewis
>      - Benoix
>      - Ben Underwood
>
> Sorting them using the default sort method results in the following list:
>      - Ben Underwood
>      - Benoix
>      - Benoizy
>      - Benoît
>      - Benï Lewis
>
>        Ben Underwood comes first due to the space having an UTF-8 value of
>  
>        Benoît comes last in the Benoi series of names due to the UTF-8
> value of î which is ï
>        Benï Lewis comes last of the list as ï has a UTF-8 value of î
>
> Using the function Alfabet to sort the list, the end result using the
> original strings appears in the form :
>      - Benï Lewis
>      - Benoît
>      - Benoix
>      - Benoizy
>      - Ben Underwood
>
>        which is the normal order a human expect to see when you ignore
> spaces, accents, umlauts, ...
>
> In annex I sent a function I have written that strips a string from all the
> non-letter characters and returns a simple pure ascii string with all
> characters in the range "a"-"z". Also included a small snapshot of an
> actual list sorted by alphabet in one of my programs. As you notice, the
> names are truly listed 'by Alphabet'
>
> Feel free to use the function or maybe the concept could be incorporated in
> a future build of Gambas
>
> Alain J. Baudrez
>
>
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