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Author Topic: empty string  (Read 8702 times)

PLCGuy

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empty string
« on: August 30, 2016, 09:27:02 AM »
how do I check to see if a string is empty. I have SL0 and what to detect if it is empty. I was able to detect numbers like 0,1,2,3,4,5 but what is the symbol for empty?
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plcnut

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Re: empty string
« Reply #1 on: August 30, 2016, 10:21:56 AM »
SL0.length=0
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PLCGuy

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Re: empty string
« Reply #2 on: August 30, 2016, 12:05:35 PM »
dam it, stop making things so simple, goes right over my head.
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Greg

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Re: empty string
« Reply #3 on: August 30, 2016, 02:47:20 PM »
You can also use the ISCLEAR instruction which will set a bit if the string is clear.
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There are two types of people in the world; those that can extrapolate from incomplete data sets.

PLCGuy

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Re: empty string
« Reply #4 on: August 31, 2016, 08:35:28 PM »
greq i will try that one.
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