The idiom is somewhat useful: my @a= (@b)[0..99]; would create a new array of max size 100, but won't make the new array larger if @b has fewer than 100 elements. And since there is probably code out there using this I don't think this inconsistency can be changed
I don't know what you mean, can't see any general difference between slicing @b or (@b), except when $#b==0!
DB<38> @b=1..3
DB<39> x @b[0..6]
0 1
1 2
2 3
3 undef
4 undef
5 undef
6 undef
DB<40> x (@b)[0..6]
0 1
1 2
2 3
3 undef
4 undef
5 undef
6 undef
now 0-element array!
DB<43> @b=()
DB<44> x @b[0..6]
0 undef
1 undef
2 undef
3 undef
4 undef
5 undef
6 undef
DB<45> x (@b)[0..6]
empty array
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