On Sat, 23 May 2020 at 05:24, Mukul Gandhi gandhi.mukul@xxxxxxxxx <
xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> On Thu, May 21, 2020 at 7:53 PM David Carlisle d.p.carlisle@xxxxxxxxx <
> xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
>> if $set1 is a your sequence of books and $set2 is your sequence of Music
>> then you seem to want
>>
>> $set1[concat(Author,'#',Country)=$m/concat(Author,'#',Country) ]
>>
>> assuming # doesn't appear in Author or Country names.
>>
>
> Nice solution.
>

short and easy to read but probably not that efficient for long lists
(unless saxon kindly rewrites this automatically to use a hashed key
lookup:-)



> There seems to be a little type above. $m should be $set2?
>

er yes, sorry.


>
>
> --
> Regards,
> Mukul Gandhi
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