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$ ./ruby -v
ruby 1.8.6 (2007-08-28 patchlevel 5000) [i686-darwin8.10.1]
$ ./ruby -e ‘a=[1,2,3,4,5];a.slice!(-3,1);p a’
[1, 2, 4, 5]
$ ./ruby -e ‘a=[1,2,3,4,5];a.slice!(-8,1);p a’
[1, 2, 4, 5]
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$ ./ruby -e ‘a=[1,2,3,4,5];a.slice!(-3,1);p a’
[1, 2, 4, 5]
$ ./ruby -e ‘a=[1,2,3,4,5];a.slice!(-8,1);p a’
-e:1:in `slice!’: index -8 out of array (IndexError)
from -e:1