Richard Lyman schrieb:
> Philipp Kempgen wrote:
>> But I guess it wouldn't hurt to add a DEFINED() function to
>> Asterisk.
>>
>> if (DEFINED(myvariable)) {
>> // ...
>> }
>>
> Isn't that what ISNULL is for?
No. ISNULL() works on values not on variables.
But Dave Fullerton found EXISTS():
http://lists.digium.com/pipermail/asterisk-users/2008-December/224059.html
Philipp Kempgen
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