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Hello,<br>
<br>
$var(...) cannot be null by design, setting it to $null makes it 0.<br>
<br>
$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.<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<div class="moz-cite-prefix">On 04/01/15 12:35, Luis Azedo wrote:<br>
</div>
<blockquote
cite="mid:6FFC6465A51B5B4C80DD111E16112FD1C4033A@mbx022-w1-ca-4.exch022.domain.local"
type="cite">
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<div style="direction: ltr;font-family: Tahoma;color:
#000000;font-size: 10pt;">Hi Daniel,
<div><br>
</div>
<div>can you help on this ?</div>
<div><br>
</div>
<div>Thank you<br>
<div style="font-family: Times New Roman; color: #000000;
font-size: 16px">
<hr tabindex="-1">
<div id="divRpF307304" style="direction: ltr;"><font
color="#000000" face="Tahoma" size="2"><b>From:</b>
sr-dev [<a class="moz-txt-link-abbreviated" href="mailto:sr-dev-bounces@lists.sip-router.org">sr-dev-bounces@lists.sip-router.org</a>] on behalf
of Luis Azedo [<a class="moz-txt-link-abbreviated" href="mailto:luis@2600hz.com">luis@2600hz.com</a>]<br>
<b>Sent:</b> Wednesday, December 31, 2014 4:19 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:sr-dev@lists.sip-router.org">sr-dev@lists.sip-router.org</a><br>
<b>Subject:</b> [sr-dev] need help understanding $null<br>
</font><br>
</div>
<div>
<div style="direction:ltr; font-family:Tahoma;
color:#000000; font-size:10pt">Hi,
<div><br>
</div>
<div>if we return val.flags = PV_VAL_NULL, does the ==
$null comparison work ?</div>
<div><br>
</div>
<div>script example</div>
<div><br>
</div>
<div>my_function("some param","$var(result)");</div>
<div>if( $var(result<span style="font-size:10pt">) ==
$null {</span></div>
<div><span style="font-size:10pt"> do something</span></div>
<div><span style="font-size:10pt">}</span></div>
<div>
<div><span style="font-size:10pt">in code =>
dst_pv->setf(msg, &dst_pv->pvp,
(int)EQ_T, &dst_val);</span></div>
</div>
<div>
<div><span style="font-size:10pt"> should the
comparison work if we set </span>dst_val<span
style="font-size:10pt">.flags = PV_VAL_NULL ?</span></div>
</div>
<div><span style="font-size:10pt"><br>
</span></div>
<div><br>
</div>
<div>if( $(myPvar{my.mytransform,transformParameter}) ==
$null) {</div>
<div> ....</div>
<div>}</div>
<div>should this work if the transform returns <span
style="font-size:10pt">val.flags = PV_VAL_NULL ?</span></div>
<div><span style="font-size:10pt"><br>
</span></div>
<div><span style="font-size:10pt"><br>
</span></div>
<div><span style="font-size:10pt">thank you</span></div>
<div><span style="font-size:10pt"><br>
</span></div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
</div>
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<br>
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<pre wrap="">_______________________________________________
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla
<a class="moz-txt-link-freetext" href="http://twitter.com/#!/miconda">http://twitter.com/#!/miconda</a> - <a class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a></pre>
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