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Question by dansav · Dec 15, 2011 at 07:22 PM · arraynull

checking for nulls in arrays

I have an array that's missing some values it may look like this myarray ,,,3,4,5
I want to check to see if myarray[0] is missing or not. How do I do that. I've tried creating an if statement with if(myarray[0]=="Null") or NULL or Null or Undefined but doesn't seem to work.

Thanks, Dan

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avatar image kevork · Dec 15, 2011 at 07:27 PM 0
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What language are you using? What is the data type of your array?

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Answer by Statement · Dec 15, 2011 at 08:16 PM

Try it without the citation marks.

 if (myarray[0] == null)
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avatar image jahroy · Dec 15, 2011 at 08:31 PM 0
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How did we miss that?

avatar image dansav · Dec 15, 2011 at 09:22 PM 0
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Seems to work. The array is of integers but it works. Thanks.

avatar image Statement · Dec 16, 2011 at 05:33 AM 0
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Is it an ArrayList?

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Answer by jahroy · Dec 15, 2011 at 07:27 PM

What type of objects are the values in your array?

Certain types, like ints and floats, can never be null.

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avatar image cj_coimbra · Dec 15, 2011 at 07:34 PM 0
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Also, if your type is int and it´s uninitialized it´s probably going to be set to 0.

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