Oy, yes. I see what you mean. The array will grow to accomodate it's highest index, and therefore all lower indexes will come into existence.

I think the OP should use a hash. Clearly, it's a hash-ish behavior he/she wants. The fact that the keys are numbers is making it look like a list problem, but really, it's a hash problem.

In reply to Re^3: Check if value exists into an array in a hash by pileofrogs
in thread Check if value exists into an array in a hash by Sombrerero_loco

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