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Re^3: map and undef - odd behaviour with an array of arrays

by eyepopslikeamosquito (Chancellor)
on Dec 22, 2012 at 08:53 UTC ( #1009988=note: print w/replies, xml ) Need Help??


in reply to Re^2: map and undef - odd behaviour with an array of arrays
in thread map and undef - odd behaviour with an array of arrays

But why did map{undef $_}(@x) behave differently than undef @x?
"undef @x" empties the array while "map{undef $_}@x" sets each element in the array to the value undef. Since your array had one element in it, that element was not deleted, rather its value was set to undef.

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