[basex-talk] Re: Unexpected result with simple mapping operator and sequence of maps

[Joe Wicentowski via BaseX-Talk]

Hi Amanda,

This isn't a direct answer to your question, but with BaseX 12.2 Query A
returns the expected result.

Joe

On Fri, Jan 30, 2026 at 11:14 AM Amanda Galtman via BaseX-Talk <
basex-talk@mailman.uni-konstanz.de> wrote:

> Hi, BaseX folks.
>
> In BaseX 12.1, Query A below returns (false, false), but I expected (true,
> false). Query B returns true, as I expected. Query C returns (true, false)
> as expected.
>
> Query A
>
> let $map1 := map{'key1': 'string'}
> let $map2 := map{'key1': [] }
> return
>   ($map1, $map2) !
>   (. instance of map(xs:string, xs:anyAtomicType) )
>
> Query B
>
> let $map1 := map{'key1': 'string'}
> return
>   $map1 ! (. instance of map(xs:string, xs:anyAtomicType) )
>
> Query C
>
> let $map1 := map{'key1': 'string'}
> return
>   ($map1, 0) ! (. instance of map(xs:string, xs:anyAtomicType) )
>
>
> Am I missing something, or is the Query A behavior a bug?
>
> Thanks,
> Amanda
>
>
>