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$ perl -le '$x = rand 2; print $x' 0.0874574767967786
$ perl -wle '@y = qw{a b c}; print $y[0.0874574767967786]' a
$ perl -MO=Deparse -e '@y = qw{a b c}; print $y[0.0874574767967786]' @y = ('a', 'b', 'c'); print $y[0]; -e syntax OK