Hello,
$var(...) cannot be null by design, setting it to $null makes it 0.
$null is more for variables that don't exist, e.g., you don't have the $avp(x), then it is null if you compare it.
Cheers, Daniel
On 04/01/15 12:35, Luis Azedo wrote:
Hi Daniel,
can you help on this ?
Thank you
*From:* sr-dev [sr-dev-bounces@lists.sip-router.org] on behalf of Luis Azedo [luis@2600hz.com] *Sent:* Wednesday, December 31, 2014 4:19 AM *To:* sr-dev@lists.sip-router.org *Subject:* [sr-dev] need help understanding $null
Hi,
if we return val.flags = PV_VAL_NULL, does the == $null comparison work ?
script example
my_function("some param","$var(result)"); if( $var(result) == $null { do something } in code => dst_pv->setf(msg, &dst_pv->pvp, (int)EQ_T, &dst_val); should the comparison work if we set dst_val.flags = PV_VAL_NULL ?
if( $(myPvar{my.mytransform,transformParameter}) == $null) { .... } should this work if the transform returns val.flags = PV_VAL_NULL ?
thank you
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