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作者 giacch 在 PTT [ Perl ] 看板的留言(推文), 共72則

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[問題] 陣列的存取....

[ Perl ]7 留言, 推噓總分: +3

作者: pcikilo - 發表於 2008/09/17 11:27(15年前)

1^F推giacch:$pdblist[$n] = substr($pdblist[$n], 0, 23)09/17 12:41

2^F→giacch: . sprintf("%3d", $n) . substr($pdblist[$n], 26);09/17 12:41

4^F推giacch:樓上方法更簡潔~ ^^ 感謝...09/18 02:49

5^F→giacch:substr($pdblist[$n], 23, 3) = sprintf("%3d", $n);09/18 02:50

6^F→giacch:substr 本身也有提供第4參數...09/18 03:21

7^F→giacch:substr($pdblist[$n], 23, 3, sprintf("%3d", $a));09/18 03:21

[問題] 有關於無條件進位的問題...

[ Perl ]4 留言, 推噓總分: +1

作者: pcikilo - 發表於 2008/09/17 00:28(15年前)

2^F推giacch:$a = int($a) + 1 if($a > int($a));09/17 00:50

3^F→giacch:二樓值為負會錯...09/17 00:54

4^F→giacch:$b = int($a); $b ++ if($a > 0 and $a > int($a));09/17 03:20

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