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Argh... I thought I could do better, but to get your exact results, all I could come up with was:
That second line can get a bit simpler if you define an empty string to have zero fields instead of having a single null field. Congrats, your solution is better than mine even though it looks unnecessarily complicated. I think the best suggestion so far is to tell split how many fields you want: Though I'd probably break it up into two lines:
-Blake In reply to Re4: split/map weirdness: empty strings vs undef
by blakem
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