Split can return undef depending on regex capture groups

Yes, that's correct, for example split( /(x)|(y)/, "axbyc" ) yields ("a", "x", undef, "b", undef, "y", "c"). It's also documented at the bottom of split.

In reply to Re^3: How to differentiate an empty array from an unitialized one? by haukex
in thread How to differentiate an empty array from an unitialized one? by iatros

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