my @escaped = "asteriskasterisk hash access unpack_func"; # 是一个元素的赋值
25 unless( $escaped[1] ){
26 print "$escaped[1] is undef.";
27 }
输出:$escaped[1] is undef.
my @escaped = "asteriskasterisk hash access unpack_func"; # 是一个元素的赋值
25 unless( $escaped[1] ){
26 print "$escaped[1] is undef.";
27 }
输出:$escaped[1] is undef.