Hi Michael,
Thanks for that succinct demonstration.
It would be a Good Thing if we could use the [1] trick knowing that it
would shortcircuit.
Best,
Tim Finney
On 04/11/2013 11:38 AM, Michael Blakeley wrote:
> Not in my 6.0-2.3 environment.
>
> declare function local:foo() {
> 1
> };
>
> declare function local:bar() {
> xdmp:sleep(1000),
> 2
> };
>
> (local:foo(), local:bar())[1],
> xdmp:elapsed-time()
> =>
> 1
> PT1.001195S
>
> The profiler shows the xdmp:sleep too. So I only use the [1] trick when I
> don't care about performance.
>
> -- Mike
>
> On 10 Apr 2013, at 20:08 , Jason Hunter <[email protected]> wrote:
>
>> It shortcuts out like you want.
>>
>> Sent from my iPhone
>>
>> On Apr 10, 2013, at 7:53 PM, Tim Finney <[email protected]> wrote:
>>
>>> Hi All,
>>>
>>> (foo(), bar())[1]
>>>
>>> can be used instead of
>>>
>>> if (exists(foo())) then foo() else bar().
>>>
>>> But does MarkLogic evaluate bar() if I use the (foo(), bar())[1]
>>> construct and foo() exists? I'm interested to know because bar() could
>>> take a long time to evaluate.
>>>
>>> Best,
>>>
>>> Tim Finney
>>> _______________________________________________
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