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It is only when the array is printed as a string the "missing slots" is printed as "undefined". good point!

MartianMartian
– MartianMartian

2018-03-06 16:33:21 +00:00
Commented Mar 6, 2018 at 16:33
Just a question tho, how is 'empty' stored in the array? please

MartianMartian
– MartianMartian

2018-03-06 16:33:44 +00:00
Commented Mar 6, 2018 at 16:33

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