$_ デェフォルト変数

こんな書き方でもいけるんだ！！素直に感動。

foreach(1..10){
print “count $_ \n”;
}

実行結果

count to 1
count to 2
count to 3
count to 4
count to 5
count to 6
count to 7
count to 8
count to 9
count to 10