Array Append

[MapleBay]

Why？

[crossrulz]

You are building an array in the first dimension.  So the length of that dimension increases by 1.  The length in the second dimension will grow to the largest of the lengths in that dimension.  The largest is still 0, so the length is 0.

There is an old thread somewhere on this board discussing this exact situation.

[MapleBay]

Thanks for your help! 

I'm going to look for this old thread.

[GerdW]

Hi Bay,

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@MapleBay wrote:

Why？

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You add a row to an empty array: you get an array with one row, but still 0 columns…

Pretty logical!

[altenbach]

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@MapleBay wrote:

Why？

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What else would you expect?? The number of elements of a multidimensional array is the product of the sizes. Any particular size can be !=0 and that is perfectly valid and meaningful.

Please don't make us click on attachments. You can embed images directly in your post. Thanks!

[altenbach · Accepted solution]

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@MapleBay wrote:

Thanks for your help! 

I'm going to look for this old thread.

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Start reading here. Further down you'll also find links to discussions from 2003 and 2010.

[MapleBay]