Re^2: How to differentiate an empty array from an unitialized one?

Iirc Split can return undef depending on regex capture groups

Comment on Re^2: How to differentiate an empty array from an unitialized one?

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Re^3: How to differentiate an empty array from an unitialized one? by haukex (Archbishop) on Jul 09, 2018 at 08:55 UTC
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.	[reply] [d/l] [select]