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Re^3: Using map and grep to Sort one list using another listby Moron (Curate) |
| on Feb 05, 2007 at 15:26 UTC ( [id://598325]=note: print w/replies, xml ) | Need Help?? |
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My take on this was rather that when the grep fails to produce a match, it returns an empty list to map which then operates on no extra entries - i.e. doing nothing rather than constructing an undefined value.
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